A fitting used with a union nut and a tailpiece to form a union.
NSN 6110-01-071-4465
NSN 5915-00-226-6863
NSN 6150-01-034-9798
NSN 5835-01-156-5622
NSN 5905-00-246-9748
NSN 6110-00-578-7243
NSN 6685-01-515-2520
NSN 5985-01-415-3866
NSN 5920-01-163-3973
NSN 7035-01-132-2917
NSN 6220-01-557-5972
NSN 5999-01-203-8314