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 5915-00-722-2881
NSN 5960-00-556-2621
NSN 6145-00-838-1811
NSN 5910-01-557-4271
NSN 5905-00-269-2770
NSN 5960-00-525-1898
NSN 5985-00-871-5708
NSN 5835-01-132-5894
NSN 6650-00-754-2276
NSN 6610-01-576-7079
NSN 4140-00-063-6417
NSN 5960-01-530-0581