A fitting used with a union nut and a tailpiece to form a union.
NSN 6610-01-383-6982
NSN 5915-01-424-6958
NSN 5975-00-785-9288
NSN 6110-01-059-0617
NSN 5990-00-033-8128
NSN 5998-00-049-2983
NSN 5855-00-107-7993
NSN 6320-00-369-7796
NSN 5945-01-321-1885
NSN 6150-00-992-1874
NSN 6110-01-633-9660
NSN 5945-01-547-6646