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 5945-01-408-4552
NSN 6220-00-764-0351
NSN 7035-01-241-2127
NSN 5999-01-505-9796
NSN 5925-00-009-3280
NSN 6320-01-322-8340
NSN 5990-01-599-7106
NSN 6610-01-642-1752
NSN 5925-01-146-9641
NSN 6220-00-753-8593
NSN 6650-01-633-9147
NSN 6240-01-371-3020