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 5960-00-145-9361
NSN 5920-01-206-3977
NSN 6110-00-351-9014
NSN 5935-00-818-4385
NSN 5835-01-200-7153
NSN 2925-01-510-9378
NSN 5910-00-526-0694
NSN 5985-01-290-4227
NSN 5905-00-233-6792
NSN 5835-01-561-2959
NSN 5895-01-167-3636
NSN 5920-01-534-4942