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 5905-01-608-4363
NSN 6320-01-506-9439
NSN 5935-01-528-1543
NSN 5835-01-203-1871
NSN 5945-00-413-2659
NSN 5998-01-068-0709
NSN 6685-01-049-3726
NSN 5945-01-452-1067
NSN 6105-00-614-8003
NSN 6320-00-194-4252
NSN 5985-01-595-0471
NSN 6130-01-357-0551