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 5998-00-807-0515
NSN 5945-01-271-2144
NSN 5960-01-605-9921
NSN 6130-01-028-4377
NSN 6240-01-039-8217
NSN 5920-01-508-6562
NSN 5999-01-202-7278
NSN 5999-00-542-0541
NSN 6220-01-343-4459
NSN 6240-00-765-9458
NSN 5990-01-290-1425
NSN 6645-01-605-1485