NSN 5975-01-619-7731

An item of metallic composition, with internal threads, designed to fit the external threads of an electrical conduit or fitting, and which, when installed, provides a method of tightening and locking the connection and completes a positive bond between the conduit and apparatus or fitting to which connected. The bonding or grounding action is accomplished by sharp beveled teeth or by a screw(s). See also locknut, electrical conduit and nut, coupling, electrical conduit.