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 6105-00-217-8990
NSN 5905-00-972-8138
NSN 5975-00-926-3073
NSN 6150-01-302-9070
NSN 5910-01-605-3393
NSN 6110-00-798-4794
NSN 6145-01-634-0388
NSN 6105-01-634-0322
NSN 6320-01-600-0787
NSN 5945-01-320-8251
NSN 5930-00-245-8223
NSN 5915-01-067-9793