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 6130-00-734-5354
NSN 5965-01-443-4749
NSN 5855-01-267-2751
NSN 5930-01-379-9950
NSN 6105-01-173-6972
NSN 6650-01-115-8431
NSN 6320-01-450-7513
NSN 5920-00-178-1688
NSN 6130-01-105-9129
NSN 5855-01-531-4664
NSN 5835-01-141-4975
NSN 7035-01-386-5722