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 5895-01-178-8177
NSN 5930-01-429-9157
NSN 6645-01-246-2725
NSN 5975-00-927-9538
NSN 6130-01-643-5385
NSN 6130-01-213-0196
NSN 5998-01-044-5169
NSN 5920-00-585-0104
NSN 5965-00-170-5254
NSN 5960-00-682-9554
NSN 6135-00-628-1142
NSN 5945-01-097-0861