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 6130-01-483-4591
NSN 6220-00-979-0177
NSN 5960-01-284-4118
NSN 7035-01-453-4242
NSN 6240-01-514-4184
NSN 6135-01-317-6021
NSN 5905-01-395-7616
NSN 6105-01-107-5991
NSN 5998-00-292-0214
NSN 5895-01-125-5711
NSN 6110-01-450-9654
NSN 6150-00-127-0041