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 5835-01-268-1924
NSN 5985-00-603-1620
NSN 6220-01-006-4966
NSN 6320-01-029-4220
NSN 5855-01-592-3128
NSN 2925-01-482-8202
NSN 5935-01-398-9114
NSN 6110-01-386-4055
NSN 6240-00-462-9026
NSN 6150-01-166-9448
NSN 6610-01-362-8686
NSN 5855-01-184-8089