This specification covers the requirements for aircraft, hydraulic, self sealing, quick disconnect couplings, for use in type II hydraulic systems (-65°F to +275°F temperature range) as defined by MIL-H-5440.
This document defines the requirements for weld fittings and machine weldments using an orbiting welding head suitable for use on cold worked 3AL-2.5V titanium, 21Cr-6Ni-9Mn CRES, and 718 nickel alloy tubing. Fitting standards covered by this specification include non-separable welded elbow, tee, and reducer fittings, and reconnectable 24-degree cone fittings, such as sleeves and unions.