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 6150-01-155-4905
NSN 5910-01-339-0923
NSN 6145-01-296-5580
NSN 6110-01-648-4299
NSN 6135-00-452-2266
NSN 5965-01-643-4195
NSN 5945-00-753-7716
NSN 5998-01-058-7362
NSN 5930-00-119-1278
NSN 4140-00-439-4100
NSN 6650-01-438-1537
NSN 6620-01-542-2689