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 2925-01-618-2711
NSN 2925-00-149-0760
NSN 2925-00-115-5857
NSN 5905-01-364-9308
NSN 6620-01-591-6681
NSN 5996-00-161-4202
NSN 6240-00-034-5909
NSN 5960-01-237-2336
NSN 6685-01-165-8963
NSN 6240-01-185-7708
NSN 6110-01-624-5076
NSN 6685-00-946-1036