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Guhring - #28 118° Spiral Flute Cobalt Screw Machine Drill Bit - First Tool & Supply

Guhring - #28 118° Spiral Flute Cobalt Screw Machine Drill Bit


Item #: 55084883
Brand: Guhring
Model #: 9055240035700

Features and Benefits

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
Spiral flutes are constructed of a higher flute angle to remove chips easier.
Product Specifications
Drill Bit Size (Decimal Inch) 0.1405
Drill Bit Size (Wire) #28
Drill Point Angle 118
Drill Bit Material Cobalt
Drill Bit Finish/Coating Bright
Flute Type Spiral
Cutting Direction Right Hand
Shank Type Straight
Flute Length (mm) 20.00
Overall Length (mm) 52.00
Flute Length x Diameter Ratio 3xD
Point Type Four Facet, Split Point
Shank Diameter (mm) 3.57
Shank Diameter (Decimal Inch) 0.1406
Shank Diameter (Inch) 9/64
Specification Designation DIN
Spiral Type Regular Spiral
Threaded Shank No
Web Configuration Tapered
Drill Bit Diameter Tolerance (mm) +0.000 to -0.018
Drill Tip Finish/Coating None
Specification Number DIN 1897
Material Grade M35
Series/List 5524
Length Type Stub
$3.46

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