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818EH3 Cobalt Jobber-Length Drill Bits

$10.52

Bulk orders will be discounted, please contact us.

These bits have a left-hand drilling direction and can be used in reverse-drilling applications to remove broken screws from a hole. The bright finish is not affected when cutting edges are resharpened, and spiral flutes evacuate chips as the bit drills into a workpiece.

Product Number: 818EH3

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  • Description
Mfr Model 46520
Measurement System Fractional Inch
Drill Bit Size 516 in
Decimal Equivalent 0.3125
Maximum Drilling Depth 2-3/8 in
Overall Length 4-1/2 in
Shank Diameter 5/16 in
Shank Type Machining Straight
Finish Machining Straw/Bronze
Material Machining Cobalt
Primary Material Application Alloy Steel; Carbon Steel; Cast Iron
UNSPSC 27112801
Country of Origin USA (subject to change)
Cutting Direction Left Hand
Flute Length 3.187 in
Flute Type Spiral
Standards DIN 338
Series 1891
Drill Bit Point Angle 135 °
Drill Bit Point Type Split Point
Number of Flutes 2
Spiral Direction Right Hand
Helix Angle 21° to 34°
Depth Dia Ratio 4xD
Primary Material Application ISO Code K, N, P
Material Grade Machining M42
Drill Length Class Jobber Length
Sheeter Drill No
Drill Point Length 0.0375mm
Shank Length 1-5/16 in
Coolant Fed Non-Coolant Through
Drill Diameter Tolerance +0.0000 in/-0.0005 in
Secondary Material Application Cast Iron; Stainless Steel
Secondary Material Application ISO Code K; M
Web Construction Split

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