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 5990-01-390-2177
NSN 6685-01-415-2235
NSN 5975-00-909-5174
NSN 6150-01-352-4916
NSN 5975-01-323-6361
NSN 5920-00-585-0104
NSN 5965-00-123-1727
NSN 5895-01-418-3910
NSN 5965-00-067-7393
NSN 6130-00-925-2303
NSN 6645-00-754-4108
NSN 6110-01-310-2474