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 6105-00-456-1433
NSN 5960-00-227-0243
NSN 5965-00-062-0559
NSN 5930-01-470-1419
NSN 6130-00-695-9046
NSN 5999-01-315-0979
NSN 5998-00-032-2353
NSN 6145-01-199-6292
NSN 6110-00-659-3348
NSN 5990-01-537-4815
NSN 5930-01-634-0659
NSN 5930-01-290-5798