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 5999-00-405-7009
NSN 5945-01-510-8334
NSN 5985-00-140-4503
NSN 5960-00-443-1483
NSN 5935-01-418-0771
NSN 5930-01-429-9864
NSN 2925-00-917-2842
NSN 5920-01-322-8928
NSN 6135-01-433-2062
NSN 7035-01-431-4560
NSN 6650-01-384-0529
NSN 5945-00-174-0810