A fitting used with a union nut and a tailpiece to form a union.
NSN 5915-01-397-2315
NSN 7035-01-491-9867
NSN 5985-01-380-6324
NSN 6105-01-392-0500
NSN 5990-01-570-5471
NSN 6130-01-659-4700
NSN 5990-01-089-9694
NSN 4140-01-012-3996
NSN 6130-00-205-1714
NSN 6320-01-550-3420
NSN 5905-01-140-7133
NSN 6150-01-420-6811