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 5835-00-264-0946
NSN 5915-01-462-6980
NSN 5930-01-565-1391
NSN 5945-00-081-9491
NSN 5895-01-055-0393
NSN 6105-00-481-0781
NSN 2925-01-144-7106
NSN 5999-01-336-6891
NSN 6645-01-309-6455
NSN 5855-01-542-9059
NSN 6620-01-126-3986
NSN 6650-01-327-3068