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 6240-01-576-9580
NSN 6650-01-146-5000
NSN 6110-01-188-6026
NSN 5975-01-322-5658
NSN 6130-01-105-7021
NSN 7035-00-890-7649
NSN 5915-00-779-4068
NSN 6320-01-098-2503
NSN 5895-00-459-9496
NSN 5950-01-462-1626
NSN 5835-00-891-2232
NSN 6135-00-100-8890