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439K09 Cobalt Screw-Machine Length Drill Bits

$12.61

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. The bits' spiral flutes evacuate chips as the bits drill into a workpiece.

Product Number: 439K09

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  • Description
Mfr Model 51818
Measurement System Fractional Inch
Drill Bit Size 21/64 in
Decimal Equivalent 0.3281
Overall Length 2-15/16 in
Shank Diameter 21/64 in
Shank Type Machining Straight
Finish Machining TiN
Material Machining Cobalt
Primary Material Application Cast Iron; Steel; Tool and Die Steel
UNSPSC 27112801
Country of Origin USA (subject to change)
Cutting Direction Right Hand
Flute Length 1-11/16 in
Flute Type Spiral
Standards ANSI
Drill Bit Point Angle 135 °
Drill Bit Point Type Split Point
Number of Flutes 2
Spiral Direction Right Hand
Helix Angle 28 °
Depth Dia Ratio 4xD
Primary Material Application ISO Code K; P
Material Grade Machining M42
Drill Length Class Screw Machine Length
Sheeter Drill No
Drill Point Length 0.068 in
Shank Length 1-1/4 in
Coolant Fed Non-Coolant Through
Drill Diameter Tolerance +0.0000 in /-0.0010 in
Secondary Material Application Non Ferrous Material
Secondary Material Application ISO Code M

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