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 5895-01-634-0630
NSN 5998-01-367-9686
NSN 5930-00-215-2881
NSN 5835-01-452-7081
NSN 6150-00-013-5613
NSN 6145-00-253-9445
NSN 5905-01-184-5135
NSN 5895-01-472-4128
NSN 5930-00-779-2484
NSN 5920-01-230-6511
NSN 5950-01-441-2580
NSN 5999-01-605-5596