A fitting used with a union nut and thread piece to form a union.
NSN 5998-01-153-2689
NSN 5930-00-268-0323
NSN 5910-01-539-9571
NSN 5915-00-615-9537
NSN 6240-01-537-0629
NSN 7035-01-532-2184
NSN 5835-01-384-3206
NSN 6105-01-465-8285
NSN 7035-01-150-1917
NSN 5895-00-247-7394
NSN 5935-00-639-1382
NSN 6150-01-617-4695