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 2925-00-902-3881
NSN 5930-00-445-9279
NSN 5975-01-622-9716
NSN 5915-00-438-7617
NSN 4140-00-541-9077
NSN 6650-01-236-4479
NSN 5998-01-167-7889
NSN 5930-01-510-6508
NSN 6135-00-567-1322
NSN 6145-00-161-2394
NSN 5945-01-509-8387
NSN 5935-01-008-9462