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 5925-00-935-5287
NSN 6220-01-435-8069
NSN 6645-00-914-2820
NSN 6150-01-293-5951
NSN 6320-01-576-6310
NSN 5925-00-491-4573
NSN 6130-01-398-7500
NSN 4140-01-271-1918
NSN 5910-01-531-5980
NSN 2925-00-115-5857
NSN 5835-00-172-8292
NSN 6620-00-562-6337