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 5925-01-370-1818
NSN 6240-00-803-2777
NSN 5965-01-267-8536
NSN 5895-01-596-5219
NSN 6220-00-933-5047
NSN 6620-00-522-6693
NSN 5960-00-034-7925
NSN 6150-01-304-6966
NSN 6650-01-395-5991
NSN 5960-01-150-8004
NSN 5925-00-866-3106
NSN 5925-00-267-3044