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 5835-00-198-4936
NSN 5990-00-909-4335
NSN 5930-00-571-5364
NSN 5925-00-296-8123
NSN 6130-00-952-1803
NSN 6145-01-322-9536
NSN 5985-01-090-0098
NSN 5915-00-914-1771
NSN 5945-00-197-4754
NSN 6105-01-268-2111
NSN 6110-00-934-7943
NSN 5930-01-113-8011