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 4140-01-185-6214
NSN 5935-01-545-5811
NSN 6620-00-924-4369
NSN 5985-00-882-8654
NSN 5998-01-267-0777
NSN 6240-01-495-0597
NSN 6320-01-397-9995
NSN 5998-01-221-2168
NSN 6650-01-422-7106
NSN 6110-01-529-5244
NSN 5910-01-487-4365
NSN 4140-00-811-2297