Collection: Washers

Washers spread bearing load, protect finishes, and lock threaded joints — small parts with a specification behind every dimension. The military washer catalog is one of the largest in fastener standards, and the NAS1149 code system is worth learning: the suffix letter defines both material and finish.

Key families: NAS1149 flat washers (the industry standard, with material codes F carbon steel, C CRES 301, E A286, D/T 2024 aluminum, A 2024-T81, B brass, V Ti-6Al-4V and finish suffixes for cadmium plate, passivation and anodize), AN960 flat washers, MS15795, MS27183, split lock washers (MS35338), internal-tooth lock washers (MS35333), NAS549 and the reduced-OD NAS620 series.

Every 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.

Washer sizes and materials are being added continuously. Send the part number and quantity — we quote within one business day.