A nut, flat on top and bottom, having 4 flat sides. 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 2925-00-221-8529
NSN 5915-01-241-1803
NSN 5990-00-479-9157
NSN 5975-01-104-0797
NSN 5999-01-134-8529
NSN 5930-01-583-5858
NSN 5935-00-387-0847
NSN 5975-00-175-6696
NSN 6240-01-449-0300
NSN 6620-01-072-1034
NSN 6320-00-164-4087
NSN 5960-00-687-1031