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818EJ4 Cobalt Jobber-Length Drill Bits

$25.66

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: 818EJ4

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  • Description
Mfr Model 46531
Measurement System Fractional Inch
Drill Bit Size 31/64 in
Decimal Equivalent 0.4844
Maximum Drilling Depth 3-9/32 in
Overall Length 5-7/8 in
Shank Diameter 31/64 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 4-3/8 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 1.5000 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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