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 6685-00-226-8152
NSN 5935-01-448-4332
NSN 5999-00-664-1818
NSN 5975-01-631-8685
NSN 5915-01-551-5095
NSN 2925-01-364-7926
NSN 5975-00-106-6145
NSN 5930-01-448-2759
NSN 5905-00-295-8630
NSN 5960-01-418-4875
NSN 6240-01-595-6812
NSN 5910-01-643-0897