A fitting used with a union nut and a tailpiece to form a union.
NSN 6650-01-464-5033
NSN 6130-01-179-8480
NSN 6620-00-604-7566
NSN 6620-01-515-2790
NSN 5920-01-025-6989
NSN 5905-01-012-8340
NSN 5945-01-649-2303
NSN 6110-01-610-0897
NSN 7035-00-009-8705
NSN 6150-01-546-8746
NSN 5999-01-386-5327
NSN 5920-00-215-5642