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 5998-01-592-5892
NSN 6620-01-418-3245
NSN 5960-00-384-2601
NSN 5930-00-186-9934
NSN 6145-01-473-4717
NSN 4140-00-895-3417
NSN 5975-01-134-5332
NSN 6620-01-087-4361
NSN 5950-01-437-3372
NSN 6145-00-179-2493
NSN 5935-01-155-4909
NSN 5920-01-158-4517