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 4140-01-551-1125
NSN 6240-01-355-0043
NSN 5965-00-934-3495
NSN 6620-01-633-8443
NSN 5935-01-124-0039
NSN 5835-00-711-3371
NSN 5965-01-529-9938
NSN 5985-01-519-3138
NSN 6220-00-535-3230
NSN 6650-01-012-3290
NSN 6105-00-143-5836
NSN 5990-00-916-9163