Wrenching facility per ms33787-20
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 6135-01-514-0356
NSN 6240-01-322-4887
NSN 5999-00-229-1361
NSN 5985-01-282-4615
NSN 6320-00-977-3930
NSN 6645-00-042-9587
NSN 5950-00-405-4500
NSN 6685-01-463-2970
NSN 6320-01-462-2295
NSN 4140-01-005-0154
NSN 6685-01-658-1730
NSN 5895-00-153-9445