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 6320-00-394-8458
NSN 5930-01-024-1241
NSN 6130-00-649-8953
NSN 6150-00-225-5565
NSN 6130-01-604-5138
NSN 5965-01-373-1412
NSN 5960-01-414-1677
NSN 6685-01-013-8915
NSN 5920-01-591-0490
NSN 5855-00-149-0766
NSN 5975-00-754-4142
NSN 6240-01-443-8851