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 2925-01-317-4543
NSN 6220-01-528-1701
NSN 5945-00-063-9244
NSN 6320-01-349-5515
NSN 6105-01-227-3003
NSN 5835-00-711-3371
NSN 5965-01-436-0390
NSN 6240-01-242-2292
NSN 6620-01-277-5990
NSN 5915-00-260-3791
NSN 6220-01-652-6588
NSN 6610-01-205-6424