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 6320-01-160-8578
NSN 5930-00-081-2238
NSN 5996-01-492-1695
NSN 5925-00-077-9618
NSN 6130-00-243-2208
NSN 5935-01-083-6267
NSN 6240-01-343-1386
NSN 5965-01-510-3456
NSN 5835-00-233-6327
NSN 6150-01-010-2988
NSN 6650-00-075-4983
NSN 6650-01-237-4689