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 6320-00-937-5625
NSN 5975-00-777-6781
NSN 5925-01-009-9799
NSN 6150-01-499-5143
NSN 5835-01-051-7584
NSN 5835-00-408-5499
NSN 5985-01-485-0749
NSN 6320-01-643-0850
NSN 5925-01-495-3727
NSN 6130-01-372-5733
NSN 6650-01-528-7570
NSN 5999-01-355-9460