A fitting used with a union nut and thread piece to form a union.
NSN 2925-01-131-0473
NSN 6320-01-113-7647
NSN 6320-01-585-8468
NSN 5920-00-220-3548
NSN 5990-01-512-9129
NSN 6105-00-289-9993
NSN 5895-01-192-9228
NSN 5920-01-386-5798
NSN 5855-00-483-0020
NSN 5835-00-358-4235
NSN 6620-00-383-8740
NSN 5999-00-922-4894