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 5965-00-246-5612
NSN 6110-01-568-0804
NSN 2925-00-188-5003
NSN 7035-00-337-8745
NSN 7035-01-137-0620
NSN 5945-01-455-1364
NSN 5910-00-105-9693
NSN 6610-00-703-6819
NSN 5999-00-025-9957
NSN 5925-01-108-1677
NSN 5835-00-518-4507
NSN 6110-00-771-4538