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 5895-01-377-5923
NSN 5905-00-813-2280
NSN 5950-00-314-6180
NSN 5998-01-497-7251
NSN 2925-00-194-7407
NSN 5915-00-955-1697
NSN 2925-00-918-0859
NSN 5935-01-304-9353
NSN 6685-01-010-3234
NSN 6320-01-015-9856
NSN 5855-00-832-9341
NSN 6150-01-049-0429