Prevailing torque all metal design locking feature
A nut, flat on top and bottom, having 12 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: Nuts of iron or steel
NSN 5855-00-631-4565
NSN 5960-00-411-3578
NSN 5895-00-194-4875
NSN 6650-01-579-3855
NSN 5915-01-107-0634
NSN 6110-00-435-8007
NSN 5945-01-401-5323
NSN 6650-01-358-7055
NSN 5915-00-110-6565
NSN 6220-01-225-2972
NSN 6150-00-752-2542
NSN 5930-01-597-3879