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 5935-01-178-0303
NSN 5960-00-650-7476
NSN 6650-01-594-9915
NSN 5835-00-453-1969
NSN 5950-01-268-8729
NSN 5975-00-116-9646
NSN 4140-01-504-3424
NSN 7035-01-022-5763
NSN 5835-01-340-4895
NSN 6610-01-065-1073
NSN 6240-01-066-6522
NSN 5960-01-065-9684