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• Knurled shank for finger turning of free running fasteners
• Applicable to nuts and bolts used in the aerospace industry
• Not suitable for machine operation or power tools
• Highly polished finish
• High-performance alloy steel
• Less wear of the fastener thanks to Dynamic-Drive™ profile
• Maximum load distribution and torque from the additional flank area
• Thin walled for better accessibility
• Standards: ISO 2725/1174 and DIN 3124/3120