A fitting used with a union nut and a tailpiece to form a union.
NSN 5930-01-437-5891
NSN 5915-01-073-8635
NSN 5965-00-199-4456
NSN 5945-00-905-7288
NSN 5996-00-553-7348
NSN 5950-00-247-0985
NSN 6130-01-141-7419
NSN 5935-00-482-3875
NSN 6620-00-475-3224
NSN 5855-01-007-9541
NSN 6320-00-242-3300
NSN 4140-01-291-1430