Collection: Fittings

Aircraft fittings join fuel, oil, hydraulic and pneumatic lines — leak-tight under pressure, vibration and thermal cycling. The category centers on flared-tube fittings to the 37° AN standard, plus adapters, elbows, tees, nuts and sleeves.

Key families include AN816/AN818/AN821 flared-tube adapters and elbows, MS20813/MS20822/MS20823 series, and coupling nuts (AN6289). Materials follow the fluid and airframe: aluminum alloy for weight-sensitive runs, carbon steel for high-pressure hydraulics, brass for instrument lines, and corrosion-resistant steel where fluids or environment demand it. Thread forms, flare angles and pressure ratings are fixed by the drawing — never substituted with plumbing-grade equivalents.

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.

Our fitting line is being added continuously. Send the part number, tube size and quantity — we quote within one business day.