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 2925-01-550-0177
NSN 6150-00-188-8337
NSN 6110-01-141-7745
NSN 6130-01-432-0287
NSN 6610-00-993-1485
NSN 2925-01-356-6017
NSN 5965-01-446-6945
NSN 6650-01-265-0025
NSN 5965-01-199-8362
NSN 5996-01-573-4779
NSN 5855-01-079-1259
NSN 6150-01-372-2989