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Chicago-Latrobe - 8.4mm 135° Cobalt Jobber Drill - Exact Tool & Supply

Chicago-Latrobe - 8.4mm 135° Cobalt Jobber Drill

Item #: 57619595
Brand: Chicago-Latrobe
Model #: 47894

Features and Benefits

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Gold provides a polished finish on a cobalt or high speed steel tool. It is commonly used on aluminum alloy, titanium and plastic.
Spiral flutes are constructed with a higher flute angle to remove chips more easily.
Product Specifications
Drill Bit Size (mm) 8.40
Drill Bit Size (Decimal Inch) 0.3307
Drill Point Angle 135
Drill Bit Material Cobalt
Drill Bit Finish/Coating Gold Finish
Flute Type Spiral
Cutting Direction Right Hand
Shank Type Straight
Coolant Through No
Flute Length (mm) 75.00
Flute Length (Decimal Inch) 2.9528
Overall Length (mm) 117.00
Overall Length (Decimal Inch) 4.6063
Point Type Split Point
Shank Diameter (mm) 8.40
Shank Diameter (Decimal Inch) 0.3307
Spiral Type Regular Spiral
Shank Length (mm) 42.00
Shank Length (Decimal Inch) 1.6535
Specification Designation NAS
Web Configuration Tapered
Drill Bit Diameter Tolerance (Decimal Inch) +0.0000 to -0.0010
Web Thinning Web-Thinned
Specification Number NAS 907-B
Drill Bit Grade Heavy Duty
Series/List 550ASP

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