A fitting used with a union nut and thread piece to form a union.
NSN 6130-01-141-7038
NSN 2925-01-415-0264
NSN 2925-01-592-5578
NSN 5950-00-764-9434
NSN 5996-01-578-6955
NSN 5930-00-244-0171
NSN 5975-01-415-9751
NSN 5910-01-201-3545
NSN 6105-01-145-7360
NSN 7035-01-509-1959
NSN 5910-00-754-0444
NSN 6610-00-251-0369