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 6620-00-426-6884
NSN 6130-01-659-0981
NSN 5975-01-340-9400
NSN 6135-01-435-6503
NSN 2925-00-708-4332
NSN 5975-01-114-7435
NSN 6130-00-762-9106
NSN 5895-01-322-7224
NSN 6240-01-236-4423
NSN 7035-01-610-6073
NSN 5935-01-608-4860
NSN 5975-00-233-6301