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 5930-01-618-5408
NSN 6150-01-528-7662
NSN 6145-00-818-0801
NSN 5999-01-288-1887
NSN 6240-00-826-8426
NSN 5835-01-329-4814
NSN 5935-00-896-3269
NSN 6685-01-572-3244
NSN 6105-00-541-8472
NSN 5910-00-453-5057
NSN 6105-00-425-2884
NSN 6610-00-858-0615