A fitting used with a union nut and thread piece to form a union.
NSN 5930-01-508-1829
NSN 6320-00-242-3300
NSN 5990-01-200-7460
NSN 5935-00-192-7163
NSN 5920-01-484-4168
NSN 6105-00-453-3445
NSN 6145-01-594-0469
NSN 6135-01-014-9755
NSN 5925-01-026-8526
NSN 5965-01-485-4088
NSN 5999-01-111-9077
NSN 5910-01-394-4663