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 6110-00-808-9930
NSN 4140-01-359-4171
NSN 6110-01-561-5375
NSN 6620-01-106-3553
NSN 5925-01-492-0006
NSN 5985-01-214-4539
NSN 6110-00-868-2103
NSN 6105-01-443-2980
NSN 6135-01-449-0625
NSN 6645-00-108-6479
NSN 6105-00-733-9226
NSN 5930-00-135-8901