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 6685-01-197-3838
NSN 7035-01-364-0286
NSN 6685-00-421-2100
NSN 5925-00-100-0102
NSN 6130-01-540-1624
NSN 5960-01-251-9659
NSN 5975-00-936-7377
NSN 6220-01-459-8017
NSN 5935-00-273-3120
NSN 5925-01-274-4070
NSN 6145-00-734-4554
NSN 5895-01-437-9318