A fitting used with a union nut and a tailpiece to form a union.
NSN 5999-00-789-1439
NSN 5915-01-345-5871
NSN 5895-00-176-1776
NSN 5975-01-436-2333
NSN 5996-00-925-1953
NSN 5965-00-246-5612
NSN 6650-01-644-7409
NSN 6135-01-393-4746
NSN 6110-00-263-6664
NSN 6150-00-369-0376
NSN 2925-01-065-0060
NSN 5935-01-102-9759