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 5910-00-720-0530
NSN 6135-01-202-8113
NSN 2925-01-236-3547
NSN 5835-01-200-7153
NSN 6650-00-068-2208
NSN 6220-01-181-5854
NSN 7035-00-295-0451
NSN 5855-00-791-5000
NSN 6220-01-258-6217
NSN 5835-01-553-6772
NSN 6130-01-062-0924
NSN 6220-01-430-7021