{"title":"Bolts","description":"\u003cp\u003eMil-spec bolts are precision externally-threaded fasteners engineered to defined tensile and shear ratings — not commodity hardware. Head styles follow the application: hexagon head for general airframe assembly, 12-point external-wrenching flange heads where high preload meets tight wrench clearance, and close-tolerance shanks for shear and alignment-critical joints. Many drawings offer drilled heads for safety wire and drilled shanks for cotter-pin retention.\u003c\/p\u003e\u003cp\u003eThe principal U.S. military bolt families: AN3–AN20 hex bolts (alloy steel, 125 KSI, cadmium plated), MS21250 12-point flange bolts (180 KSI), NAS464 shear bolts, NAS6304 A286 shear bolts for elevated temperatures, NAS6603–6620 close-tolerance bolts (160 KSI), and NAS6204 drilled-shank variants. Materials include 4037, 4130, 4140, 8740, E4340 and 6150 alloy steels, with cadmium plate per QQ-P-416 or black oxide per MIL-DTL-13924.\u003c\/p\u003e\u003cp\u003eEvery lot ships with a Certificate of Conformance; heat-lot traceable mill material reports are available on request. Made to order, ships in 4 weeks, delivered duty paid — US duties included in our prices, with free express shipping on orders of $300 or more. Sold by the piece (EA), 1-piece minimum.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNow stocking: MS21250 12-point flange bolts — 234 SKUs from $3.74\u003c\/strong\u003e, plain and drilled-head, thirteen diameter groups. Hex-bolt and close-tolerance series are being added continuously. Need AN, NAS or other MS bolts? Send the part number and quantity — we quote within one business day.\u003c\/p\u003e","products":[{"product_id":"ms21250-02012","title":"MS21250-02012 12-Point Flange Bolt — 180 KSI, .1640-32, 0.750\" Grip","description":"\u003cp\u003eThe MS21250-02012 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-02012 (supersedes to NASM21250-02012)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.1640-32 UNJC-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.750 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.155 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.290–0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.1625–0.1635 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.2188 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.250 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.385 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e4,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e2,950 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003eAssigned per configuration — available on request\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.010 lb (5 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H02012\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.750\"–0.750\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633265324230,"sku":"MS21250-02012","price":8.79,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-03006","title":"MS21250-03006 12-Point Flange Bolt — 180 KSI, .1900-32, 0.375\" Grip","description":"\u003cp\u003eThe MS21250-03006 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-03006 (supersedes to NASM21250-03006)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.1900-32 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.375 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e0.815 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.340–0.350 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.1885–0.1895 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.2500 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.265 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.420 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e6,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e3,910 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-121-0341\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.012 lb (5 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H03006\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–1.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633265389766,"sku":"MS21250-03006","price":6.24,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-03008","title":"MS21250-03008 12-Point Flange Bolt — 180 KSI, .1900-32, 0.500\" Grip","description":"\u003cp\u003eThe MS21250-03008 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-03008 (supersedes to NASM21250-03008)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.1900-32 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.500 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e0.940 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.340–0.350 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.1885–0.1895 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.2500 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.265 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.420 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e6,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e3,910 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-028-0179\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.013 lb (6 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H03008\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–1.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633265619142,"sku":"MS21250-03008","price":7.42,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-03024","title":"MS21250-03024 12-Point Flange Bolt — 180 KSI, .1900-32, 1.500\" Grip","description":"\u003cp\u003eThe MS21250-03024 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-03024 (supersedes to NASM21250-03024)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.1900-32 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.500 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.940 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.340–0.350 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.1885–0.1895 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.2500 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.265 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.420 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e6,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e3,910 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-199-3773\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.021 lb (9 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H03024\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–1.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633265651910,"sku":"MS21250-03024","price":16.15,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04004","title":"MS21250-04004 12-Point Flange Bolt — 180 KSI, .2500-28, 0.250\" Grip","description":"\u003cp\u003eThe MS21250-04004 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04004 (supersedes to NASM21250-04004)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.250 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e0.762 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-905-8448\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.019 lb (9 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04004\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633265684678,"sku":"MS21250-04004","price":7.01,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04006","title":"MS21250-04006 12-Point Flange Bolt — 180 KSI, .2500-28, 0.375\" Grip","description":"\u003cp\u003eThe MS21250-04006 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04006 (supersedes to NASM21250-04006)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.375 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e0.887 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-091-3877\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.021 lb (10 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04006\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633266045126,"sku":"MS21250-04006","price":3.74,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04008","title":"MS21250-04008 12-Point Flange Bolt — 180 KSI, .2500-28, 0.500\" Grip","description":"\u003cp\u003eThe MS21250-04008 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04008 (supersedes to NASM21250-04008)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.500 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.012 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-958-9199\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.023 lb (10 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04008\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633266077894,"sku":"MS21250-04008","price":4.92,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04010","title":"MS21250-04010 12-Point Flange Bolt — 180 KSI, .2500-28, 0.625\" Grip","description":"\u003cp\u003eThe MS21250-04010 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04010 (supersedes to NASM21250-04010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.625 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.137 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-912-6805\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.024 lb (11 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04010\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633266143430,"sku":"MS21250-04010","price":4.36,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04012","title":"MS21250-04012 12-Point Flange Bolt — 180 KSI, .2500-28, 0.750\" Grip","description":"\u003cp\u003eThe MS21250-04012 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04012 (supersedes to NASM21250-04012)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.750 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.262 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-913-2430\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.026 lb (12 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04012\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633266208966,"sku":"MS21250-04012","price":7.53,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04014","title":"MS21250-04014 12-Point Flange Bolt — 180 KSI, .2500-28, 0.875\" Grip","description":"\u003cp\u003eThe MS21250-04014 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04014 (supersedes to NASM21250-04014)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.875 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.387 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-913-2429\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.028 lb (13 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04014\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633266241734,"sku":"MS21250-04014","price":5.62,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04016","title":"MS21250-04016 12-Point Flange Bolt — 180 KSI, .2500-28, 1.000\" Grip","description":"\u003cp\u003eThe MS21250-04016 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04016 (supersedes to NASM21250-04016)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.000 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.512 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-925-9696\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.030 lb (13 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04016\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633266274502,"sku":"MS21250-04016","price":6.5,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04020","title":"MS21250-04020 12-Point Flange Bolt — 180 KSI, .2500-28, 1.250\" Grip","description":"\u003cp\u003eThe MS21250-04020 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04020 (supersedes to NASM21250-04020)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.250 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.762 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-939-0812\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.033 lb (15 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04020\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633266438342,"sku":"MS21250-04020","price":9.67,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04022","title":"MS21250-04022 12-Point Flange Bolt — 180 KSI, .2500-28, 1.375\" Grip","description":"\u003cp\u003eThe MS21250-04022 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04022 (supersedes to NASM21250-04022)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.375 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.887 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-958-9326\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.035 lb (16 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04022\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633266471110,"sku":"MS21250-04022","price":9.54,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04026","title":"MS21250-04026 12-Point Flange Bolt — 180 KSI, .2500-28, 1.625\" Grip","description":"\u003cp\u003eThe MS21250-04026 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04026 (supersedes to NASM21250-04026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.625 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.137 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-955-8206\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.038 lb (17 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04026\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633266503878,"sku":"MS21250-04026","price":4.92,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04028","title":"MS21250-04028 12-Point Flange Bolt — 180 KSI, .2500-28, 1.750\" Grip","description":"\u003cp\u003eThe MS21250-04028 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04028 (supersedes to NASM21250-04028)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.750 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.262 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-958-9328\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.040 lb (18 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04028\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633266536646,"sku":"MS21250-04028","price":33.55,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04032","title":"MS21250-04032 12-Point Flange Bolt — 180 KSI, .2500-28, 2.000\" Grip","description":"\u003cp\u003eThe MS21250-04032 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04032 (supersedes to NASM21250-04032)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.000 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.512 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-921-0857\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.044 lb (20 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04032\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633267126470,"sku":"MS21250-04032","price":22.38,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04034","title":"MS21250-04034 12-Point Flange Bolt — 180 KSI, .2500-28, 2.125\" Grip","description":"\u003cp\u003eThe MS21250-04034 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04034 (supersedes to NASM21250-04034)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.125 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.637 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-085-3227\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.045 lb (21 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04034\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633267159238,"sku":"MS21250-04034","price":32.36,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04036","title":"MS21250-04036 12-Point Flange Bolt — 180 KSI, .2500-28, 2.250\" Grip","description":"\u003cp\u003eThe MS21250-04036 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04036 (supersedes to NASM21250-04036)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.250 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.762 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-921-0858\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.047 lb (21 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04036\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633267257542,"sku":"MS21250-04036","price":16.84,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04038","title":"MS21250-04038 12-Point Flange Bolt — 180 KSI, .2500-28, 2.375\" Grip","description":"\u003cp\u003eThe MS21250-04038 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04038 (supersedes to NASM21250-04038)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.375 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.887 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-562-9424\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.049 lb (22 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04038\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633267650758,"sku":"MS21250-04038","price":13.65,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04040","title":"MS21250-04040 12-Point Flange Bolt — 180 KSI, .2500-28, 2.500\" Grip","description":"\u003cp\u003eThe MS21250-04040 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04040 (supersedes to NASM21250-04040)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.500 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e3.012 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-969-3161\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003e9A991 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.050 lb (23 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04040\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633267683526,"sku":"MS21250-04040","price":42.09,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04044","title":"MS21250-04044 12-Point Flange Bolt — 180 KSI, .2500-28, 2.750\" Grip","description":"\u003cp\u003eThe MS21250-04044 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04044 (supersedes to NASM21250-04044)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.750 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e3.262 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-048-1128\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.054 lb (24 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04044\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633267716294,"sku":"MS21250-04044","price":47.24,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04050","title":"MS21250-04050 12-Point Flange Bolt — 180 KSI, .2500-28, 3.125\" Grip","description":"\u003cp\u003eThe MS21250-04050 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04050 (supersedes to NASM21250-04050)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e3.125 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e3.637 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-080-2977\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.059 lb (27 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04050\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633267749062,"sku":"MS21250-04050","price":17.4,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-04054","title":"MS21250-04054 12-Point Flange Bolt — 180 KSI, .2500-28, 3.375\" Grip","description":"\u003cp\u003eThe MS21250-04054 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-04054 (supersedes to NASM21250-04054)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.2500-28 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e3.375 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e3.887 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.428–0.438 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.2485–0.2495 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3125 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.300 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.492 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e10,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e6,980 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-272-5444\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003e9A991 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.063 lb (28 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H04054\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–3.625\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633268043974,"sku":"MS21250-04054","price":37.36,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05004","title":"MS21250-05004 12-Point Flange Bolt — 180 KSI, .3125-24, 0.250\" Grip","description":"\u003cp\u003eThe MS21250-05004 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05004 (supersedes to NASM21250-05004)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.250 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e0.849 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-143-2259\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.033 lb (15 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05004\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633268109510,"sku":"MS21250-05004","price":6.86,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05006","title":"MS21250-05006 12-Point Flange Bolt — 180 KSI, .3125-24, 0.375\" Grip","description":"\u003cp\u003eThe MS21250-05006 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05006 (supersedes to NASM21250-05006)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.375 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e0.974 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-869-0945\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.035 lb (16 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05006\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633268142278,"sku":"MS21250-05006","price":5.92,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05007","title":"MS21250-05007 12-Point Flange Bolt — 180 KSI, .3125-24, 0.436\" Grip","description":"\u003cp\u003eThe MS21250-05007 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05007 (supersedes to NASM21250-05007)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.436 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.035 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-327-0365\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.037 lb (17 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05007\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633268175046,"sku":"MS21250-05007","price":6.28,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05008","title":"MS21250-05008 12-Point Flange Bolt — 180 KSI, .3125-24, 0.500\" Grip","description":"\u003cp\u003eThe MS21250-05008 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05008 (supersedes to NASM21250-05008)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.500 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.099 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-990-6918\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.038 lb (17 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05008\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633268273350,"sku":"MS21250-05008","price":7.56,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05010","title":"MS21250-05010 12-Point Flange Bolt — 180 KSI, .3125-24, 0.625\" Grip","description":"\u003cp\u003eThe MS21250-05010 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05010 (supersedes to NASM21250-05010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.625 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.224 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-510-5338\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.041 lb (19 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05010\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633268306118,"sku":"MS21250-05010","price":9.14,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05011","title":"MS21250-05011 12-Point Flange Bolt — 180 KSI, .3125-24, 0.686\" Grip","description":"\u003cp\u003eThe MS21250-05011 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05011 (supersedes to NASM21250-05011)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.686 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.285 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-327-0366\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.042 lb (19 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05011\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633268895942,"sku":"MS21250-05011","price":11.84,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05012","title":"MS21250-05012 12-Point Flange Bolt — 180 KSI, .3125-24, 0.750\" Grip","description":"\u003cp\u003eThe MS21250-05012 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05012 (supersedes to NASM21250-05012)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.750 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.349 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-074-2701\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.044 lb (20 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05012\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633269125318,"sku":"MS21250-05012","price":6.17,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05013","title":"MS21250-05013 12-Point Flange Bolt — 180 KSI, .3125-24, 0.811\" Grip","description":"\u003cp\u003eThe MS21250-05013 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05013 (supersedes to NASM21250-05013)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.811 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.410 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-327-9034\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.045 lb (20 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05013\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633269158086,"sku":"MS21250-05013","price":6.95,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05014","title":"MS21250-05014 12-Point Flange Bolt — 180 KSI, .3125-24, 0.875\" Grip","description":"\u003cp\u003eThe MS21250-05014 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05014 (supersedes to NASM21250-05014)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.875 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.474 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-057-8703\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.046 lb (21 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05014\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633269190854,"sku":"MS21250-05014","price":7.79,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05015","title":"MS21250-05015 12-Point Flange Bolt — 180 KSI, .3125-24, 0.936\" Grip","description":"\u003cp\u003eThe MS21250-05015 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05015 (supersedes to NASM21250-05015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e0.936 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.535 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-326-3396\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.048 lb (22 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05015\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633269747910,"sku":"MS21250-05015","price":7.88,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05016","title":"MS21250-05016 12-Point Flange Bolt — 180 KSI, .3125-24, 1.000\" Grip","description":"\u003cp\u003eThe MS21250-05016 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05016 (supersedes to NASM21250-05016)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.000 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.599 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-925-9697\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.049 lb (22 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05016\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633269780678,"sku":"MS21250-05016","price":10.02,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05017","title":"MS21250-05017 12-Point Flange Bolt — 180 KSI, .3125-24, 1.061\" Grip","description":"\u003cp\u003eThe MS21250-05017 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05017 (supersedes to NASM21250-05017)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.061 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.660 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-326-3397\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.050 lb (23 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05017\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633269813446,"sku":"MS21250-05017","price":17.46,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05018","title":"MS21250-05018 12-Point Flange Bolt — 180 KSI, .3125-24, 1.125\" Grip","description":"\u003cp\u003eThe MS21250-05018 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05018 (supersedes to NASM21250-05018)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.125 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.724 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-949-3769\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.052 lb (23 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05018\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633269878982,"sku":"MS21250-05018","price":5.92,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05020","title":"MS21250-05020 12-Point Flange Bolt — 180 KSI, .3125-24, 1.250\" Grip","description":"\u003cp\u003eThe MS21250-05020 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05020 (supersedes to NASM21250-05020)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.250 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.849 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-143-2286\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.054 lb (25 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05020\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633270206662,"sku":"MS21250-05020","price":6.86,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05022","title":"MS21250-05022 12-Point Flange Bolt — 180 KSI, .3125-24, 1.375\" Grip","description":"\u003cp\u003eThe MS21250-05022 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05022 (supersedes to NASM21250-05022)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.375 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e1.974 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-955-8237\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.057 lb (26 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05022\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633270239430,"sku":"MS21250-05022","price":12.42,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05024","title":"MS21250-05024 12-Point Flange Bolt — 180 KSI, .3125-24, 1.500\" Grip","description":"\u003cp\u003eThe MS21250-05024 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05024 (supersedes to NASM21250-05024)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.500 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.099 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-905-8449\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.060 lb (27 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05024\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633270272198,"sku":"MS21250-05024","price":10.62,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05026","title":"MS21250-05026 12-Point Flange Bolt — 180 KSI, .3125-24, 1.625\" Grip","description":"\u003cp\u003eThe MS21250-05026 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05026 (supersedes to NASM21250-05026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.625 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.224 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-938-6624\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.063 lb (28 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05026\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633270567110,"sku":"MS21250-05026","price":7.42,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05028","title":"MS21250-05028 12-Point Flange Bolt — 180 KSI, .3125-24, 1.750\" Grip","description":"\u003cp\u003eThe MS21250-05028 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05028 (supersedes to NASM21250-05028)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.750 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.349 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-935-3113\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.065 lb (30 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05028\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633270599878,"sku":"MS21250-05028","price":13.23,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05030","title":"MS21250-05030 12-Point Flange Bolt — 180 KSI, .3125-24, 1.875\" Grip","description":"\u003cp\u003eThe MS21250-05030 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05030 (supersedes to NASM21250-05030)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e1.875 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.474 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-135-1056\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.068 lb (31 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05030\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633270632646,"sku":"MS21250-05030","price":43.6,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05032","title":"MS21250-05032 12-Point Flange Bolt — 180 KSI, .3125-24, 2.000\" Grip","description":"\u003cp\u003eThe MS21250-05032 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05032 (supersedes to NASM21250-05032)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.000 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.599 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-282-3380\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.071 lb (32 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05032\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633270927558,"sku":"MS21250-05032","price":37.42,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05034","title":"MS21250-05034 12-Point Flange Bolt — 180 KSI, .3125-24, 2.125\" Grip","description":"\u003cp\u003eThe MS21250-05034 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05034 (supersedes to NASM21250-05034)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.125 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.724 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-420-6474\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.073 lb (33 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05034\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633270960326,"sku":"MS21250-05034","price":34.67,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05036","title":"MS21250-05036 12-Point Flange Bolt — 180 KSI, .3125-24, 2.250\" Grip","description":"\u003cp\u003eThe MS21250-05036 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05036 (supersedes to NASM21250-05036)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.250 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.849 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-097-4662\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.076 lb (35 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05036\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633270993094,"sku":"MS21250-05036","price":9.91,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05038","title":"MS21250-05038 12-Point Flange Bolt — 180 KSI, .3125-24, 2.375\" Grip","description":"\u003cp\u003eThe MS21250-05038 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05038 (supersedes to NASM21250-05038)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.375 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e2.974 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-131-7218\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.079 lb (36 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05038\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633271025862,"sku":"MS21250-05038","price":18.65,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05040","title":"MS21250-05040 12-Point Flange Bolt — 180 KSI, .3125-24, 2.500\" Grip","description":"\u003cp\u003eThe MS21250-05040 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05040 (supersedes to NASM21250-05040)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.500 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e3.099 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-152-4934\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.082 lb (37 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05040\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633271386310,"sku":"MS21250-05040","price":44.32,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05044","title":"MS21250-05044 12-Point Flange Bolt — 180 KSI, .3125-24, 2.750\" Grip","description":"\u003cp\u003eThe MS21250-05044 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05044 (supersedes to NASM21250-05044)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e2.750 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e3.349 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-144-0300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.087 lb (39 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05044\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633271419078,"sku":"MS21250-05044","price":31.81,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05048","title":"MS21250-05048 12-Point Flange Bolt — 180 KSI, .3125-24, 3.000\" Grip","description":"\u003cp\u003eThe MS21250-05048 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05048 (supersedes to NASM21250-05048)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e3.000 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e3.599 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-01-169-7592\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003e9A991 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.092 lb (42 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05048\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633271451846,"sku":"MS21250-05048","price":7.42,"currency_code":"USD","in_stock":true}]},{"product_id":"ms21250-05050","title":"MS21250-05050 12-Point Flange Bolt — 180 KSI, .3125-24, 3.125\" Grip","description":"\u003cp\u003eThe MS21250-05050 is a high-strength 12-point external-wrenching flange bolt designed for tension-critical aerospace structures — airframe joints, engine mounts, rotor and control-system connections where 180 ksi tensile performance and positive wrenching engagement are required. Its flanged 12-point head delivers high clamp force in confined spaces where a standard hex cannot develop sufficient torque.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eMS21250-05050 (supersedes to NASM21250-05050)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003e.3125-24 UNJF-3A per MIL-S-8879\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrip Length\u003c\/td\u003e\n\u003ctd\u003e3.125 in (±.010)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOverall Length\u003c\/td\u003e\n\u003ctd\u003e3.724 in (±.015)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Diameter (A)\u003c\/td\u003e\n\u003ctd\u003e0.521–0.531 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Diameter (B)\u003c\/td\u003e\n\u003ctd\u003e0.3110–0.3120 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlange Diameter (W)\u003c\/td\u003e\n\u003ctd\u003e0.3750 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Height (H)\u003c\/td\u003e\n\u003ctd\u003e0.348 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Length (T)\u003c\/td\u003e\n\u003ctd\u003e0.579 in ref\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltimate Tensile Strength\u003c\/td\u003e\n\u003ctd\u003e180,000–200,000 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDouble Shear Strength\u003c\/td\u003e\n\u003ctd\u003e16,600 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTensile Strength (min)\u003c\/td\u003e\n\u003ctd\u003e11,100 lbf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAISI 4340 alloy steel (4140 \/ 8740 \/ 6150 alternates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness\u003c\/td\u003e\n\u003ctd\u003eHRC 39–43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCadmium plate + chromate per QQ-P-416 Type II Class 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHead Marking\u003c\/td\u003e\n\u003ctd\u003eMS21250 + manufacturer's code\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcurement Spec\u003c\/td\u003e\n\u003ctd\u003eMIL-B-8831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eDatasheet \u0026amp; Compliance\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFSC\u003c\/td\u003e\n\u003ctd\u003e5306 (Bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNSN\u003c\/td\u003e\n\u003ctd\u003e5306-00-881-0672\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eECCN\u003c\/td\u003e\n\u003ctd\u003eEAR99 (no license required for standard export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSchedule B\u003c\/td\u003e\n\u003ctd\u003e7318.15.8085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e≈ 0.095 lb (43 g) per piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMOQ\u003c\/td\u003e\n\u003ctd\u003eNone — order from 1 pc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eManufacturer certifications (CoC + mill report + dimensional report) ship FREE with every lot.\u003c\/p\u003e\u003ch3\u003eAlternatives \u0026amp; Related Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrilled-head variant for safety wire: \u003cstrong\u003eMS21250H05050\u003c\/strong\u003e (4 holes, 0.037 in)\u003c\/li\u003e\n\u003cli\u003eSame diameter group, other grip lengths: 0.250\"–4.500\" grips available\u003c\/li\u003e\n\u003cli\u003eCurrent standard: \u003cstrong\u003eNASM21250\u003c\/strong\u003e (military adoption of MS21250; fully interchangeable)\u003c\/li\u003e\n\u003cli\u003eNot for new design after 4 Dec 1980 per the standard — replacement-in-kind only; we support all legacy fleet demand.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eLead Time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMade to order — ships in 4 weeks.\u003c\/strong\u003e Raw material (AISI 4340 bar) is stocked at our Kunshan plant; every lot is machined, heat-treated, plated and inspected to order. No stockouts, no minimums on standard sizes.\u003c\/p\u003e\u003ch3\u003eQuality Documentation\u003c\/h3\u003e\u003cp\u003eEvery lot ships with: Certificate of Conformance (CoC) · mill material report (heat-lot traceable) · full dimensional inspection report · First Article Inspection (FAI) on request. 100% thread and plating verification per MIL-B-8831.\u003c\/p\u003e\u003ch3\u003eShipping \u0026amp; Duties — DDP\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eFree express shipping on orders of $300 or more\u003c\/strong\u003e; a flat $49.99 courier charge applies to smaller orders (FedEx\/DHL, 3–7 days worldwide after the 4-week production lead time). US import duty and Section 301 tariffs are included in our prices — delivered duty paid, no customs surprises. Larger programs (\u0026gt;500 pcs or \u0026gt;$5,000): request a quote for FOB terms and volume pricing.\u003c\/p\u003e","brand":"FULLERKREG","offers":[{"title":"EA","offer_id":48633271517382,"sku":"MS21250-05050","price":37.33,"currency_code":"USD","in_stock":true}]}],"url":"https:\/\/fullerkregaerospace.com\/collections\/bolts.oembed?page=3","provider":"Fullerkregaerospace","version":"1.0","type":"link"}