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 6135-00-351-8606
NSN 7035-00-417-2967
NSN 6650-01-049-5361
NSN 5910-00-901-4008
NSN 6105-01-083-2186
NSN 5915-00-233-6346
NSN 7035-01-204-7481
NSN 5996-00-598-4839
NSN 6130-01-268-6664
NSN 6145-01-441-9225
NSN 5910-00-099-4549
NSN 6610-01-174-0708