Notch on one side
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 6220-00-145-1423
NSN 5920-00-883-8633
NSN 5998-00-674-1210
NSN 5999-00-835-3784
NSN 6620-01-448-0572
NSN 5930-01-183-7986
NSN 5835-00-830-6416
NSN 5910-00-419-0330
NSN 6130-00-235-4359
NSN 6685-01-277-5987
NSN 5960-00-915-6269
NSN 5930-01-357-7069