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 6610-00-661-1797
NSN 5998-01-416-2731
NSN 5925-01-178-7547
NSN 6610-01-015-9798
NSN 5915-00-959-4379
NSN 2925-01-320-6512
NSN 6240-00-683-0725
NSN 5895-01-083-5200
NSN 5985-01-174-3324
NSN 6685-00-156-3054
NSN 5905-00-225-8330
NSN 6650-01-594-9915