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 6650-01-622-0706
NSN 6150-00-968-3700
NSN 5950-01-583-9877
NSN 5895-01-361-8242
NSN 5895-00-153-2595
NSN 5895-00-740-7461
NSN 5998-00-984-1420
NSN 5925-01-351-3660
NSN 2925-00-880-4061
NSN 2925-01-364-7926
NSN 6145-01-118-7859
NSN 5945-01-161-0726