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.)
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5920-01-419-5271
NSN 5930-01-301-4865
NSN 6145-01-612-0736
NSN 6110-00-882-7117
NSN 7035-00-150-2379
NSN 5960-01-189-5712
NSN 6135-00-152-8729
NSN 5920-01-634-0250
NSN 5835-01-295-9220
NSN 6320-00-823-2015
NSN 6620-01-168-2557
NSN 6135-01-557-3351