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 6650-01-531-9827
NSN 5835-01-203-1871
NSN 5999-00-384-2954
NSN 4140-00-970-8426
NSN 2925-00-336-8364
NSN 6145-01-499-3214
NSN 5945-00-171-4484
NSN 6650-00-809-1817
NSN 5990-00-185-5888
NSN 6645-01-367-2581
NSN 5915-01-502-4285
NSN 5935-01-520-9949