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 5950-01-287-7418
NSN 5895-01-239-7000
NSN 5965-01-422-1392
NSN 6320-00-925-0558
NSN 6645-01-230-9728
NSN 5999-00-081-9413
NSN 6150-01-039-6886
NSN 5835-01-004-1495
NSN 5935-00-276-9413
NSN 6135-00-112-8637
NSN 5965-01-258-5662
NSN 6620-01-054-9346