Wrenching facility per ms33787-38
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 5920-01-634-0250
NSN 6135-00-660-8654
NSN 5925-00-854-8076
NSN 6620-01-494-9858
NSN 4140-01-406-9922
NSN 5990-01-370-4785
NSN 6150-00-406-2761
NSN 6110-01-546-8179
NSN 5998-00-557-7780
NSN 5975-01-618-8997
NSN 6145-00-977-6160
NSN 6220-00-621-4240