A fitting used with a union nut and thread piece to form a union.
NSN 6130-00-791-5551
NSN 5915-01-495-1923
NSN 6240-01-475-9503
NSN 6240-00-923-8944
NSN 2925-01-183-2897
NSN 5925-01-020-1748
NSN 6220-00-961-0783
NSN 5985-01-315-2735
NSN 6240-01-615-6339
NSN 6145-00-826-3995
NSN 5895-01-437-6572
NSN 6320-00-036-3688