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 5999-01-619-5763
NSN 5996-00-597-2234
NSN 5996-00-165-5027
NSN 6685-01-467-8789
NSN 5835-00-339-3020
NSN 5935-01-425-8437
NSN 6150-01-590-6234
NSN 6620-01-408-4464
NSN 6650-00-784-9222
NSN 5999-01-283-1289
NSN 5930-01-104-3984
NSN 5998-01-390-7149