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 5920-00-241-6803
NSN 5910-00-441-0670
NSN 5960-01-255-5580
NSN 5935-00-005-3387
NSN 6105-01-320-8808
NSN 5835-01-502-9228
NSN 4140-00-753-6888
NSN 5895-00-085-4416
NSN 6650-01-494-9956
NSN 5920-01-012-3805
NSN 5920-01-332-6414
NSN 5835-01-555-8963