An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also locknut, pipe; nut (1), tube coupling and nut (1), plain, hexagon.
NSN 5960-00-051-0132
NSN 6645-01-585-8628
NSN 5910-01-531-8685
NSN 5895-00-943-0430
NSN 5920-01-048-7462
NSN 5925-01-029-3483
NSN 6145-00-245-6646
NSN 6650-00-754-2276
NSN 6645-01-399-8127
NSN 6110-00-248-2942
NSN 6150-01-445-7253
NSN 6620-01-633-8443