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 5965-01-633-8849
NSN 5935-00-902-1541
NSN 5935-01-376-0859
NSN 6150-00-228-1587
NSN 6105-01-462-1657
NSN 5960-00-083-2793
NSN 6105-00-496-5761
NSN 5910-01-607-0208
NSN 6135-01-017-3001
NSN 5895-00-985-4151
NSN 5945-01-364-3759
NSN 5925-01-650-1747