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 5998-01-234-8995
NSN 6220-01-597-9882
NSN 5930-01-094-7435
NSN 5905-01-371-2538
NSN 5835-01-027-0597
NSN 5920-00-492-5516
NSN 6135-01-260-7180
NSN 4140-00-111-2617
NSN 6650-01-083-6671
NSN 5945-01-468-0837
NSN 6135-01-210-8715
NSN 6650-01-344-8138