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 6110-00-230-4509
NSN 4140-01-011-1019
NSN 6685-01-044-4156
NSN 6650-01-568-0299
NSN 5835-01-487-3042
NSN 6220-00-481-9969
NSN 6650-00-266-6808
NSN 6620-01-228-1571
NSN 5945-00-081-2754
NSN 6645-01-198-4078
NSN 6145-01-023-9263
NSN 7035-00-897-7567