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 5855-01-406-2606
NSN 5930-00-405-1421
NSN 5930-01-386-3010
NSN 5855-01-325-9507
NSN 6240-01-567-2376
NSN 5990-00-166-9476
NSN 5930-00-219-8580
NSN 5855-00-631-4565
NSN 6105-01-065-0341
NSN 6610-01-247-6374
NSN 5950-00-081-9226
NSN 5935-00-952-5656