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 5925-01-083-6500
NSN 4140-00-476-0672
NSN 5985-01-542-7475
NSN 6135-00-276-7625
NSN 5998-01-073-1901
NSN 6645-01-239-3702
NSN 5925-01-015-5746
NSN 5998-00-475-6377
NSN 4140-01-435-5412
NSN 5960-01-604-1158
NSN 5990-00-884-1743
NSN 6135-00-182-7008