National Twist Drill - Letter R 130° Cobalt Jobber Drill

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Item #: 58833112Brand: National Twist DrillModel #: 027661AW Features and Benefits Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used o n high tensile alloys. Titanium Nitride (TiN) is a multi-purpose coating which increases chip flow in softer materials. The heat and hardness resistance allows the tool to run at higher speeds than uncoated tools. Spiral flutes are constructed with a higher flute angle to remove chips more easily. Product Specifications Drill Bit Size (Letter) R Drill Bit Size (Decimal Inch) 0.3390 Drill Point Angle 130 Drill Bit Material Cobalt Drill Bit Finish/Coating TiN Flute Type Spiral Cutting Direction Right Hand Shank Type Straight Coolant Through No Flute Length (Inch) 3-7/16 Flute Length (Decimal Inch) 3.4375 Overall Length (Decimal Inch) 4.7500 Overall Length (Inch) 4-3/4 Web Configuration Tapered Drill Bit Diameter Tolerance (Decimal Inch) +0.0000 to -0.0010 Number of Flutes 2 Web Thinning Web-Thinned Show more