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 6645-01-031-6402
NSN 5990-01-526-9941
NSN 5960-01-317-3800
NSN 5855-01-356-5284
NSN 5835-00-725-2087
NSN 5920-01-182-8745
NSN 6135-01-260-7180
NSN 6150-00-497-3710
NSN 6610-01-075-5821
NSN 5990-00-920-2894
NSN 6650-01-061-2750
NSN 6610-01-231-9283