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439U91 Taper-Length Drill Bits

$25.65

Bulk orders will be discounted, please contact us.

The TiN coating on these drill bits protects them from wear and heat when drilling steel, stainless steel, and aluminum. Cobalt drill bits tolerate higher drilling speeds and are harder and more wear-resistant than high-speed steel drill bits. They provide some shock absorption and can be used in handheld power tools. These bits have spiral flutes that evacuate chips as the bits drill into a workpiece.

Product Number: 439U91

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  • Description
Mfr Model C16919
Measurement System Metric
Drill Bit Size 4.00 mm
Decimal Equivalent 0.1575
Maximum Drilling Depth 78.00 mm
Overall Length 119.00 mm
Shank Type Machining Straight
Finish Machining TiN
Material Machining Cobalt
Primary Material Application Cast Iron; Stainless Steel; Steel
UNSPSC 27112801
Country of Origin USA (subject to change)
Cutting Direction Right Hand
Flute Length 78.00 mm
Flute Type Parabolic
Standards DIN 340
Drill Bit Point Angle 135 °
Drill Bit Point Type Split Point
Number of Flutes 2
Spiral Direction Right Hand
Helix Angle 35°/45°
Depth Dia Ratio 10xD
Shank Dia 4.00 mm
Primary Material Application ISO Code K; M; P
Material Grade Machining M42
Drill Length Class Taper Length
Sheeter Drill No
Drill Point Length 0.0326 mm
Shank Length 41.00 mm
Coolant Fed Non-Coolant Through
Drill Diameter Tolerance +0.0000 in /-0.0007 in
Secondary Material Application Alloy Steel; Carbon Steel; Stainless Steel
Secondary Material Application ISO Code M; P
Number of Coolant Holes 2

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