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 5965-00-971-5522
NSN 5835-00-051-9092
NSN 2925-00-483-9357
NSN 5975-01-502-7338
NSN 5998-01-133-0353
NSN 5935-01-467-9194
NSN 5925-00-262-6087
NSN 5990-01-263-9364
NSN 5985-00-605-7365
NSN 5975-01-277-9482
NSN 5930-01-641-2933
NSN 5855-00-481-0019