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 5910-00-013-9118
NSN 2925-00-051-1467
NSN 5920-00-165-0390
NSN 6105-00-773-1135
NSN 6650-00-077-0638
NSN 5998-01-135-9899
NSN 5990-01-633-9503
NSN 5998-01-223-6466
NSN 5855-01-308-0955
NSN 6135-00-803-3012
NSN 5855-01-455-4910
NSN 6645-01-266-0883