A fitting used with a union nut and a tailpiece to form a union.
NSN 4140-00-225-8586
NSN 5905-01-023-5829
NSN 6685-01-477-9516
NSN 6150-01-078-0449
NSN 5996-01-023-7896
NSN 5998-01-627-5806
NSN 6620-00-684-6771
NSN 5835-01-011-3000
NSN 6610-01-633-8931
NSN 6240-01-518-3874
NSN 5855-01-524-9353
NSN 5925-01-163-9088