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 4140-00-933-0570
NSN 6645-00-922-8312
NSN 6110-01-345-4301
NSN 6135-01-633-8502
NSN 5910-01-444-4096
NSN 5975-00-498-6618
NSN 5945-01-556-6994
NSN 6105-00-186-9380
NSN 5855-01-223-0833
NSN 5895-01-371-2431
NSN 5935-00-240-5019
NSN 5905-01-567-3989