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 6130-01-229-3444
NSN 6320-01-347-2638
NSN 5965-01-119-1898
NSN 5920-00-848-3043
NSN 5905-00-412-8345
NSN 5935-01-627-5813
NSN 5895-00-589-8183
NSN 6110-00-626-8522
NSN 5999-01-183-7956
NSN 5965-01-355-7164
NSN 6220-01-302-6001
NSN 5998-01-627-6752