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 5835-00-698-9824
NSN 6620-01-361-4796
NSN 5935-00-579-5638
NSN 6610-00-807-6620
NSN 5855-01-473-6076
NSN 6110-01-361-7478
NSN 6135-01-579-3534
NSN 5835-01-416-6455
NSN 5950-01-260-7570
NSN 5915-01-414-2634
NSN 5965-01-368-9994
NSN 5920-00-151-4039