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 5905-01-084-9138
NSN 6645-00-488-4432
NSN 5960-01-564-5044
NSN 5998-00-553-9535
NSN 5915-01-542-0951
NSN 5895-00-091-0857
NSN 6110-01-197-7674
NSN 6240-01-509-1905
NSN 5935-01-034-5551
NSN 6150-00-217-0475
NSN 5920-01-117-2745
NSN 2925-01-528-7333