A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery.
Classification: Nuts of iron or steel
NSN 6240-01-495-4211
NSN 6620-00-938-1789
NSN 5960-01-162-6166
NSN 6150-00-723-2521
NSN 6645-01-590-5534
NSN 5895-01-467-5419
NSN 6220-01-505-2247
NSN 5920-01-224-0355
NSN 5960-00-869-3995
NSN 6610-01-644-2546
NSN 5925-01-317-3869
NSN 6135-01-457-7239