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 5935-01-438-2752
NSN 6150-01-109-3926
NSN 5920-00-023-2926
NSN 5835-01-370-4292
NSN 5965-01-218-7795
NSN 6650-01-425-7362
NSN 6220-01-550-3646
NSN 5990-01-584-8363
NSN 6620-01-373-0174
NSN 6320-01-458-9567
NSN 5855-01-289-7278
NSN 6105-01-426-7906