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 6150-00-343-7404
NSN 6150-00-189-0292
NSN 5990-01-378-1444
NSN 5835-01-339-0542
NSN 5950-00-057-4774
NSN 2925-01-164-4197
NSN 5965-00-164-8092
NSN 5950-00-068-7343
NSN 5925-01-634-0664
NSN 6320-01-393-7022
NSN 5915-00-572-7761
NSN 5930-00-471-8455