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 4140-00-456-0902
NSN 5895-00-010-5284
NSN 5915-00-291-3736
NSN 5835-01-293-4122
NSN 5998-00-888-4377
NSN 5915-01-179-8585
NSN 6135-00-726-4142
NSN 5999-01-533-5114
NSN 4140-01-591-6540
NSN 5855-00-610-4052
NSN 6135-01-164-3561
NSN 6145-01-268-5622