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 6240-00-740-8901
NSN 5950-00-740-8897
NSN 5905-01-217-0393
NSN 5935-01-415-1775
NSN 5835-01-493-1826
NSN 5935-01-345-2582
NSN 4140-01-587-5770
NSN 4140-00-237-5797
NSN 6650-00-492-6072
NSN 5985-01-375-6794
NSN 6650-01-148-3499
NSN 5910-00-975-1089