A fitting used with a union nut and thread piece to form a union.
NSN 6320-01-476-7702
NSN 5915-01-326-8490
NSN 5935-01-075-6954
NSN 5998-00-478-7112
NSN 5925-01-567-8795
NSN 6150-00-599-0721
NSN 6320-01-449-1014
NSN 5935-00-953-1582
NSN 6685-00-446-9516
NSN 5915-01-579-2093
NSN 5910-00-518-4608
NSN 5855-01-417-3250