A fitting used with a union nut and a tailpiece to form a union.
NSN 6110-01-421-8866
NSN 5975-00-736-3420
NSN 6620-00-938-9571
NSN 6645-01-615-9875
NSN 6620-01-462-0001
NSN 6320-01-384-3850
NSN 6650-00-008-3941
NSN 6645-00-813-3084
NSN 6610-00-777-2591
NSN 6685-01-200-1013
NSN 5835-01-301-0022
NSN 5910-00-892-7657