A fitting used with a union nut and thread piece to form a union.
NSN 5920-01-262-5094
NSN 6135-01-116-3385
NSN 6650-01-195-3957
NSN 5920-00-196-3631
NSN 6320-00-024-1004
NSN 5996-01-327-5027
NSN 5990-00-467-7431
NSN 2925-00-912-3993
NSN 5895-01-634-0630
NSN 6320-01-116-3980
NSN 6685-01-030-2749
NSN 4140-00-473-5768