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 4140-01-251-2469
NSN 5920-01-444-6732
NSN 6685-01-562-5603
NSN 6220-01-585-4698
NSN 5990-01-336-3976
NSN 6610-01-273-9317
NSN 6130-01-599-1580
NSN 6610-01-099-9710
NSN 6645-01-298-4662
NSN 6650-00-393-0447
NSN 4140-00-293-3619
NSN 5999-00-388-9449