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 6320-01-259-2604
NSN 6620-01-544-1083
NSN 5965-00-317-1679
NSN 6610-01-150-7018
NSN 6610-01-545-2844
NSN 5915-01-079-9014
NSN 6105-01-454-3377
NSN 5925-00-445-6978
NSN 6685-00-419-0643
NSN 5925-01-421-9793
NSN 6645-01-459-9586
NSN 5975-01-136-4988