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Chicago-Latrobe - 0.3937" 135° Cobalt Screw Machine Drill Bit - Benchmark Tooling

Chicago-Latrobe - 0.3937" 135° Cobalt Screw Machine Drill Bit


Item #: 10284008
Brand: Chicago-Latrobe
Model #: 49021

Features and Benefits

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Oxide prevents chip building, galling and welding on the workpiece. It is commonly used on low carbons, stainless steel and iron based ferrous metals.
Spiral flutes are constructed of a higher flute angle to remove chips easier.
Spiral flute reamers are used in blind and through-hole operations. They are used to bridge interrupted cuts.
Product Specifications
Drill Bit Size (Decimal Inch) 0.3937
Drill Bit Size (mm) 10.00
Drill Point Angle 135
Drill Bit Material Cobalt
Drill Bit Finish/Coating Oxide
Flute Type Spiral
Cutting Direction Right Hand
Shank Type Straight
Coolant Through No
Flute Length (Inch) 1.755
Flute Length (mm) 44.58
Overall Length (mm) 92.2782
Overall Length (Decimal Inch) 3.63300
Flute Length x Diameter Ratio 4xD
Point Type Split Point
Shank Diameter (mm) 10.0000
Flute Type Spiral
Specification Designation DIN
Maximum Drilling Depth (Decimal Inch) 1.3780
Spiral Type Regular Spiral
Shank Length (mm) 47.701
Threaded Shank No
Number of Flutes 2
Drill Bit Diameter Tolerance (Decimal Inch) +0.0000 to -0.0010
Drill Bit Diameter Tolerance (Decimal Inch) +0.0000 to -0.0010
Drill Tip Finish/Coating Oxide
Specification Number DIN 1897
PSC Code 5133
Specification Number DIN 1897
Through Coolant No
Drill Bit Grade Heavy Duty
Drill Bit Grade Heavy Duty
Material Grade M42
Series/List 559
Length Type Overall length
$13.79

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