A fitting used with a union nut and thread piece to form a union.
NSN 6220-01-280-3983
NSN 5945-00-913-7553
NSN 5915-01-094-7847
NSN 5945-01-366-0298
NSN 5905-00-701-5755
NSN 5985-01-107-7408
NSN 5920-00-773-1282
NSN 6650-00-155-8431
NSN 6645-01-337-1806
NSN 5965-01-395-0104
NSN 6150-01-038-8137
NSN 6620-00-266-2763