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 6650-01-600-8058
NSN 6135-01-296-1860
NSN 5915-01-015-0726
NSN 6240-00-104-4662
NSN 5990-00-631-1617
NSN 6645-01-633-1852
NSN 5920-00-112-4341
NSN 6220-01-117-0322
NSN 6240-01-139-3377
NSN 5999-00-953-5137
NSN 6645-01-115-4953
NSN 5998-00-028-6920