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 6105-01-560-2697
NSN 6620-00-450-2532
NSN 6620-00-500-0041
NSN 6105-01-124-3877
NSN 6105-01-202-0504
NSN 5945-00-216-7432
NSN 5935-00-083-1029
NSN 5965-01-415-1210
NSN 5905-01-175-1973
NSN 5835-01-193-3175
NSN 6240-01-633-9357
NSN 5895-01-018-8722