A fitting used with a union nut and thread piece to form a union.
NSN 6135-01-411-3212
NSN 5950-01-539-2735
NSN 6145-01-576-3462
NSN 6650-01-364-8504
NSN 5910-01-444-6271
NSN 5999-01-230-3387
NSN 5998-01-188-4363
NSN 5920-01-492-5788
NSN 5910-01-407-8099
NSN 6130-01-492-8282
NSN 7035-01-356-4025
NSN 5996-01-060-4610