A fitting used with a union nut and a tailpiece to form a union.
NSN 5998-00-658-3303
NSN 5999-01-554-9234
NSN 6320-00-004-9158
NSN 6220-01-168-9383
NSN 5835-00-393-1996
NSN 5975-00-570-9598
NSN 5950-01-329-5784
NSN 6685-00-454-7530
NSN 6220-00-403-4813
NSN 6610-00-722-7472
NSN 6650-01-539-4720
NSN 5945-01-364-9553