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 6130-00-728-9621
NSN 6110-00-844-2564
NSN 5855-01-418-6303
NSN 6135-00-968-8594
NSN 5920-01-477-5312
NSN 6105-01-162-0260
NSN 6150-00-278-7070
NSN 5905-00-787-4657
NSN 5975-01-508-4139
NSN 5935-01-252-8826
NSN 6650-01-175-0841
NSN 5855-01-458-5163