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 6135-01-260-7180
NSN 5905-00-063-1112
NSN 6220-01-413-4164
NSN 2925-01-649-7543
NSN 6240-00-467-7295
NSN 6685-00-871-7264
NSN 6130-01-285-3387
NSN 6240-00-495-6763
NSN 6620-00-979-6860
NSN 4140-00-064-7847
NSN 5985-00-543-1987
NSN 5990-01-443-2931