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 5835-00-148-9719
NSN 5930-00-810-0191
NSN 5950-00-900-4465
NSN 6110-01-448-1736
NSN 5985-01-366-7950
NSN 5935-00-900-4104
NSN 6110-00-099-7113
NSN 6130-00-949-3393
NSN 6320-01-119-3935
NSN 5895-00-178-0375
NSN 5930-00-408-9654
NSN 5915-01-287-2328