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 5965-00-317-1679
NSN 6130-01-206-8144
NSN 5835-01-631-7390
NSN 5935-00-909-2375
NSN 2925-01-418-8106
NSN 5985-00-779-1754
NSN 6610-01-067-0228
NSN 6320-00-116-3658
NSN 6620-00-443-1885
NSN 6685-01-429-8922
NSN 5999-01-495-4894
NSN 6150-01-295-5287