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 4140-01-518-8170
NSN 5998-01-371-0492
NSN 5999-00-905-6936
NSN 7035-00-803-3056
NSN 5835-00-466-8544
NSN 5920-01-416-2518
NSN 5930-01-194-1198
NSN 5925-01-105-0928
NSN 5925-01-348-4223
NSN 5935-01-478-2882
NSN 6135-01-458-3851
NSN 6220-00-823-6688