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 5935-01-099-8904
NSN 6240-01-055-9696
NSN 6650-01-406-4451
NSN 6135-01-100-3593
NSN 5998-00-369-1101
NSN 5960-01-481-8051
NSN 5950-00-246-5277
NSN 6105-01-350-2117
NSN 5930-00-907-7300
NSN 5905-01-113-8242
NSN 6320-01-380-0561
NSN 5998-00-893-7047