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 5945-01-184-7304
NSN 5999-00-950-2360
NSN 5855-00-494-9581
NSN 5930-01-469-6345
NSN 6145-01-017-6589
NSN 5920-01-521-9550
NSN 6145-01-327-3328
NSN 6130-01-416-8430
NSN 5910-01-191-3972
NSN 5960-01-086-9650
NSN 5935-01-274-7900
NSN 5855-01-167-2162