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 5905-01-523-1723
NSN 5935-01-384-1630
NSN 5999-00-288-5954
NSN 5985-01-654-5299
NSN 5990-01-489-0366
NSN 5895-01-110-1494
NSN 5835-01-089-7615
NSN 6105-00-897-7380
NSN 5965-01-553-8639
NSN 5835-01-076-4091
NSN 5925-01-391-4684
NSN 5910-01-029-3959