A fitting used with a union nut and thread piece to form a union.
NSN 6105-00-330-0882
NSN 5910-00-320-7492
NSN 5915-00-713-9013
NSN 5920-01-618-6044
NSN 6105-00-588-4686
NSN 6130-01-465-4320
NSN 5895-01-514-2948
NSN 6610-01-275-9771
NSN 6220-01-193-7577
NSN 2925-01-523-3607
NSN 5975-00-530-3751
NSN 5965-00-082-8987