A fitting used with a union nut and thread piece to form a union.
NSN 5835-01-370-4292
NSN 5935-00-106-6101
NSN 6645-01-175-9875
NSN 6145-00-150-5049
NSN 6150-01-287-9643
NSN 6320-01-476-7702
NSN 5950-01-188-4728
NSN 6620-00-608-1480
NSN 5905-01-495-6373
NSN 6110-00-959-2100
NSN 5930-01-411-6534
NSN 6685-01-107-1779