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 5960-00-923-5047
NSN 5945-01-235-8945
NSN 6105-01-293-2760
NSN 5965-00-484-3966
NSN 5920-00-871-1045
NSN 6145-01-431-7767
NSN 5895-01-187-0156
NSN 6620-01-453-6764
NSN 5835-01-535-0948
NSN 5960-01-447-7074
NSN 7035-01-213-5590
NSN 5905-01-096-3054