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 6650-01-359-8537
NSN 6110-00-937-3437
NSN 5935-01-614-8910
NSN 5925-01-359-4814
NSN 5975-01-367-7565
NSN 5998-01-653-7426
NSN 5915-00-025-1763
NSN 5855-00-610-4052
NSN 5965-01-005-0341
NSN 6135-01-025-8109
NSN 6645-01-478-2140
NSN 5930-01-075-6929