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 6240-00-145-1536
NSN 6220-00-932-4992
NSN 5985-00-975-9728
NSN 6145-01-459-1697
NSN 6130-01-050-8723
NSN 6685-01-595-1525
NSN 5910-01-597-8509
NSN 4140-01-300-6897
NSN 6240-01-047-7697
NSN 5965-00-372-2537
NSN 5915-01-432-4848
NSN 6685-01-587-4050