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 6110-01-652-5895
NSN 6240-00-226-0462
NSN 5905-00-722-2468
NSN 5925-01-504-4765
NSN 6620-01-600-0479
NSN 6240-01-572-6003
NSN 5975-01-167-2355
NSN 5998-01-322-8328
NSN 6150-00-601-6683
NSN 6105-00-998-0342
NSN 2925-01-629-9416
NSN 6105-01-535-7636