A fitting used with a union nut and a tailpiece to form a union.
NSN 5998-01-212-9394
NSN 6145-01-196-3389
NSN 5945-01-462-7943
NSN 6650-01-633-9147
NSN 6240-00-275-1950
NSN 5996-01-528-9203
NSN 5998-00-733-7717
NSN 5996-00-083-6433
NSN 6650-01-190-2304
NSN 5935-00-372-5261
NSN 6645-01-018-1799
NSN 5915-00-679-9390