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 6110-00-678-8500
NSN 6650-00-543-6023
NSN 4140-00-860-1373
NSN 2925-01-444-2061
NSN 5990-00-258-0228
NSN 6145-00-388-9084
NSN 6105-01-112-2308
NSN 5930-01-296-1138
NSN 5925-01-200-7813
NSN 6145-01-503-6654
NSN 6240-00-237-7878
NSN 4140-01-083-5870