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 7035-01-419-4317
NSN 6105-01-391-1984
NSN 5855-01-083-1027
NSN 5950-00-925-7416
NSN 5935-01-052-5223
NSN 6145-01-469-6661
NSN 5960-00-805-5775
NSN 4140-01-484-1940
NSN 6110-01-415-7890
NSN 5985-00-156-4536
NSN 6105-01-172-0214
NSN 5915-01-139-5277