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 5910-01-403-2812
NSN 5920-00-816-7535
NSN 5935-01-360-9403
NSN 5935-00-708-2362
NSN 6110-01-135-6584
NSN 6650-01-042-2045
NSN 5910-01-237-5067
NSN 5920-01-099-8350
NSN 6320-01-194-1253
NSN 5925-00-280-2273
NSN 5855-00-494-9581
NSN 5999-01-330-3868