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 5935-01-503-3140
NSN 4140-01-564-2258
NSN 5975-01-415-4283
NSN 5945-01-534-3664
NSN 5920-01-229-0623
NSN 5925-01-606-8674
NSN 6150-01-155-5657
NSN 5930-00-411-2221
NSN 5990-01-460-6390
NSN 5920-01-624-9252
NSN 6220-01-462-6931
NSN 6645-01-272-2501