Manufacturer Part Number: C91717|Fastener Type Compatibility|Socket-Head Cap ScrewFastener Size Compatibility (Wire)|Fastener Size Compatibility (Inch)|7/16Counterbore Diameter (mm)|Fastener Size Compatibility (mm)|Counterbore Diameter (Decimal Inch)|Fastener Size Compatibility (Decimal Inch)|Counterbore Diameter (Inch)|41/64Tool Material|High-Speed SteelShank Type|Straight-CylindricalShank Diameter (mm)|12.70Shank Diameter|0.5in; 1/2in; 12.7mmShank Diameter (Inch)|1/2Shank Diameter (Inch - 0 Decimals)|Shank Diameter (Decimal Inch)|Standard/Oversize Pilot|StandardFlute Type|Series|Tool Application|Tool Performance|Aircraft Style|NoPilot Diameter (mm)|Pilot Diameter (Inch)|29/64Pilot Diameter (Decimal Inch)|Shank Taper Designation|Overall Length (mm)|177.80Overall Length (Inch)|7Overall Length (Decimal Inch)|7.0000Cutting Direction|ForwardIncluded Angle|Primary Workpiece Material|Primary Workpiece Material Code|Secondary Workpiece Material|Secondary Workpiece Material Code|Tip Included Angle|Number Of Flutes|3Number Of Flutes|Coating/Finish|Bright/UncoatedMaterial Application|Alloy Tool Steel; Carbon Steel; Cast IronProduct Service Code|UNSPSC Code|