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 5910-01-289-4076
NSN 5998-01-571-8105
NSN 5998-01-185-9704
NSN 5895-00-600-5662
NSN 4140-01-492-7215
NSN 6650-00-336-0753
NSN 5945-01-633-8232
NSN 5910-00-872-3175
NSN 5895-01-340-9325
NSN 5965-01-523-4572
NSN 7035-00-513-9764
NSN 5915-01-592-3186