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 5925-01-206-4330
NSN 5915-01-462-0432
NSN 5920-01-397-2754
NSN 6150-00-115-6649
NSN 7035-01-116-6223
NSN 6240-01-063-7685
NSN 5985-01-444-4054
NSN 5999-00-999-5476
NSN 2925-01-505-1666
NSN 2925-01-277-5882
NSN 6150-01-227-9953
NSN 5960-01-100-5065