A nut having 12 drive points and 24 sides. The bearing surface may be washer faced. An integral locking feature is incorporated in the design of the head or in the threads.
NSN 6610-00-686-5817
NSN 6620-01-183-5095
NSN 5996-01-302-5000
NSN 5960-01-010-3083
NSN 5835-00-013-9271
NSN 5985-00-232-3459
NSN 6610-01-124-8114
NSN 6220-01-540-0509
NSN 5960-01-132-2975
NSN 5935-01-421-1469
NSN 5905-00-119-8812
NSN 5905-01-461-2870