A fitting used with a union nut and thread piece to form a union.
NSN 6610-01-487-8879
NSN 5920-00-584-4592
NSN 5945-00-171-4484
NSN 5925-01-421-3154
NSN 5920-00-165-0390
NSN 6620-01-575-3634
NSN 5998-01-327-5653
NSN 7035-01-254-3606
NSN 6685-00-269-6444
NSN 5930-01-400-6126
NSN 5835-01-364-6830
NSN 5965-00-185-9687