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 5930-00-456-0889
NSN 4140-01-118-0789
NSN 5930-00-239-7650
NSN 6320-00-853-1920
NSN 4140-00-182-9158
NSN 5996-01-305-4892
NSN 5965-01-192-8989
NSN 5935-01-440-3156
NSN 5835-01-397-8801
NSN 2925-01-014-8007
NSN 5985-00-171-2395
NSN 5945-01-048-1469