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 7035-01-522-9338
NSN 5930-00-530-5193
NSN 5935-00-170-1894
NSN 5930-01-142-7058
NSN 2925-01-472-4423
NSN 5935-00-269-5516
NSN 4140-01-260-4156
NSN 6620-00-527-6523
NSN 6320-01-144-3810
NSN 5905-01-274-9031
NSN 6105-00-965-9796
NSN 6220-01-381-1771