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 6620-01-554-0030
NSN 5965-01-217-3301
NSN 5935-00-370-2346
NSN 5950-00-829-5484
NSN 6320-01-227-2648
NSN 6105-01-509-9164
NSN 6220-01-463-9255
NSN 5910-01-422-4924
NSN 5855-01-085-5354
NSN 5910-00-518-4608
NSN 5915-01-552-1082
NSN 5935-01-661-3188