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 5910-00-427-5664
NSN 5835-00-092-1136
NSN 6105-01-539-3344
NSN 6105-01-244-5739
NSN 5960-00-855-4003
NSN 6610-00-419-0315
NSN 5999-01-370-9920
NSN 5960-00-880-8595
NSN 5960-01-421-8175
NSN 5920-00-917-6824
NSN 5855-01-346-7682
NSN 6620-00-248-6950