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 6105-01-459-7235
NSN 5990-01-395-4194
NSN 4140-01-199-9771
NSN 5965-01-186-2051
NSN 5930-01-420-7225
NSN 2925-01-604-8984
NSN 6685-00-146-2308
NSN 6650-01-256-4610
NSN 5855-00-973-5717
NSN 5960-00-155-9266
NSN 5960-01-064-0319
NSN 5855-01-392-3734