A fitting used with a union nut and thread piece to form a union.
NSN 5915-01-196-9620
NSN 6130-00-432-4766
NSN 6220-01-131-1528
NSN 4140-01-328-1948
NSN 5965-01-307-8301
NSN 5935-00-035-4559
NSN 4140-01-227-1342
NSN 5965-00-996-3541
NSN 4140-00-431-6583
NSN 6610-01-033-2402
NSN 5945-01-359-0319
NSN 5835-01-186-4961