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 6650-00-016-3676
NSN 5920-01-168-7810
NSN 5960-00-081-6022
NSN 5920-01-517-9915
NSN 4140-01-154-3960
NSN 6650-01-323-6252
NSN 5895-01-450-0374
NSN 5935-00-918-7587
NSN 5965-01-256-9460
NSN 7035-01-400-3666
NSN 5855-01-321-3881
NSN 4140-01-222-2126