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 5910-01-108-2533
NSN 5975-01-229-7155
NSN 5960-00-652-3610
NSN 5835-01-446-6065
NSN 6650-01-364-4616
NSN 6145-01-648-5971
NSN 5905-01-528-7879
NSN 6105-00-446-2971
NSN 5945-01-609-7439
NSN 6645-01-109-5200
NSN 5855-01-408-3154
NSN 5935-01-265-1111