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 6105-00-228-9053
NSN 6685-01-398-0653
NSN 5945-01-595-6691
NSN 6150-01-068-3787
NSN 5855-01-473-6076
NSN 5835-01-068-7849
NSN 6320-01-106-4414
NSN 6320-01-388-1067
NSN 5835-00-269-2232
NSN 5925-01-370-4417
NSN 5996-01-372-4534
NSN 5935-01-103-4766