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 6150-01-089-8055
NSN 6220-01-053-7829
NSN 5895-00-982-8759
NSN 5960-01-264-2087
NSN 6650-01-358-0948
NSN 6130-01-062-2836
NSN 4140-00-133-1780
NSN 5910-00-484-3130
NSN 6145-01-514-2566
NSN 5905-01-444-4160
NSN 6650-00-527-7451
NSN 5930-00-406-6409