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 6320-01-506-9439
NSN 5835-01-015-4610
NSN 5930-01-306-0323
NSN 6240-01-492-7194
NSN 5855-01-109-6433
NSN 5905-01-605-1569
NSN 5960-01-358-5469
NSN 7035-01-449-1846
NSN 5935-01-343-3212
NSN 5999-00-716-1100
NSN 5999-01-201-1730
NSN 6320-01-366-5157