Chromic acid dipped
A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.
Classification: Nuts of iron or steel
NSN 5975-01-554-8928
NSN 6220-00-643-4045
NSN 5960-01-512-0233
NSN 5990-01-493-4039
NSN 6130-00-935-5185
NSN 5895-00-155-4578
NSN 5905-01-089-9516
NSN 2925-01-580-1527
NSN 4140-01-606-9953
NSN 5985-01-323-6460
NSN 5910-00-598-3674
NSN 5996-00-061-0336