A fitting used with a union nut and a tailpiece to form a union.
NSN 5950-01-547-5207
NSN 6110-01-107-6953
NSN 5975-01-568-4872
NSN 5935-01-331-3267
NSN 5905-01-294-8315
NSN 5975-01-463-3173
NSN 5930-00-724-6701
NSN 5965-00-843-9957
NSN 5999-01-424-8468
NSN 5960-01-029-2940
NSN 5990-01-617-5156
NSN 6220-01-090-0126