A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 6135-01-528-2830
NSN 6320-00-809-5744
NSN 6135-00-416-2898
NSN 6620-00-269-5168
NSN 5945-01-097-0173
NSN 5905-01-483-1701
NSN 5910-00-081-0677
NSN 6320-01-352-5653
NSN 5895-01-393-1517
NSN 6105-00-012-8278
NSN 6320-00-779-5923
NSN 5998-00-568-3973