National Twist Drill - 8.5mm 140° Spiral Flute Solid Carbide Taper Length Drill Bit

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Item #: 58823097Brand: National Twist DrillModel #: 027453AW Features and Benefits Solid carbide provides better rigidity than high speed steel. It is extremely heat-resistant and used for high speed applications on cast iron, nonferrous materials, plastics and other tough-to-machine materials. Aluminum titanium nitride (AlTiN) is one of the most abrasive resistant and hardest coatings. It is commonly used for machining aircraft and aerospace material, nickel alloys, stainless steel, titanium, cast iron and carbon steel. Spiral flutes are constructed with a higher flute angle to remove chips more easily. Product Specifications Drill Bit Size (mm) 8.50 Drill Bit Size (Decimal Inch) 0.3346 Drill Point Angle 140 Drill Bit Material Solid Carbide Drill Bit Finish/Coating AlTiN Flute Type Spiral Cutting Direction Right Hand Shank Type Straight Through Coolant Yes Flute Length (Decimal Inch) 3.7402 Flute Length (mm) 95.00 Overall Length (mm) 142.00 Overall Length (Decimal Inch) 5.5906 Spiral Type Regular Spiral Shank Diameter (mm) 10.00 Shank Diameter (Decimal Inch) 0.3937 Web Configuration Tapered Drill Bit Diameter Tolerance (Decimal Inch) +0.0000 to -0.0010 Web Thinning Web-Thinned Material Grade Micrograin Show more