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 6610-01-109-1147
NSN 5905-00-110-9247
NSN 7035-00-096-9986
NSN 5935-00-136-9710
NSN 6650-00-379-5434
NSN 5835-01-296-3790
NSN 5965-00-661-0469
NSN 6220-01-265-7144
NSN 6110-01-449-2685
NSN 5915-01-613-4733
NSN 5945-00-933-2296
NSN 6610-00-410-2866