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 5960-01-127-5425
NSN 5935-01-537-3462
NSN 5965-01-107-8549
NSN 5960-01-604-1158
NSN 5895-01-494-6243
NSN 5990-00-277-3763
NSN 6610-01-227-1692
NSN 5835-00-130-6404
NSN 5996-01-027-1729
NSN 5965-01-051-0126
NSN 6145-00-019-0047
NSN 5920-01-121-6525