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 5935-01-323-4918
NSN 6110-00-446-6099
NSN 5920-00-398-0766
NSN 5895-00-720-4148
NSN 5965-01-541-0879
NSN 6150-01-442-5736
NSN 6320-01-108-5933
NSN 6650-00-575-7487
NSN 7035-00-153-3826
NSN 6610-01-244-7192
NSN 5930-01-312-5760
NSN 5985-01-186-3343