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 6685-00-269-4895
NSN 6685-00-825-4360
NSN 5985-01-454-7683
NSN 5975-01-235-1962
NSN 5999-01-177-9194
NSN 5895-01-563-6123
NSN 4140-01-098-8706
NSN 5920-01-481-5839
NSN 6610-00-712-2217
NSN 6145-00-296-0085
NSN 5998-00-243-7459
NSN 5935-00-116-8254