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 6105-00-534-8211
NSN 6685-01-273-7874
NSN 6620-01-476-7355
NSN 5985-01-125-6788
NSN 6130-00-072-1919
NSN 5985-01-634-0635
NSN 5905-01-380-6137
NSN 5925-00-405-3363
NSN 6135-01-633-8502
NSN 6110-00-845-4871
NSN 5910-01-263-2836
NSN 7035-01-517-1713