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439G41 Taper-Shank Drill Bits

$92.31

Bulk orders will be discounted, please contact us.

These drill bits have a black-oxide finish that retains lubricants to improve the bits' wear resistance and chip flow. Black-oxide bits should only be used for drilling ferrous metals. High-speed steel drill bits provide more flexibility and absorb more shock and vibration than cobalt and carbide drill bits, making them suitable for use in manual drilling machines and handheld power tools. They may leave a rough finish on the hole. These bits have spiral flutes that evacuate chips as the bits drill into a workpiece.

Product Number: 439G41

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  • Description
Mfr Model C12247
Measurement System Fractional Inch
Drill Bit Size 31/32 in
Decimal Equivalent 0.9688
Maximum Drilling Depth 6-3/8 in
Overall Length 11 in
Shank Type Machining Taper
Finish Machining Black Oxide
Material Machining High Speed Steel
Primary Material Application Cast Iron; Steel
UNSPSC 27112801
Country of Origin USA (subject to change)
Cutting Direction Right Hand
Flute Length 6-3/8 in
Flute Type Spiral
Standards ASME B94.11M-1993
Drill Bit Point Angle 118 °
Drill Bit Point Type Conventional Point
Number of Flutes 2
Spiral Direction Right Hand
Helix Angle 21° to 34°
Depth Dia Ratio 4xD
Primary Material Application ISO Code K; P
Material Grade Machining General Purpose
Coolant Fed Non-Coolant Through
Drill Diameter Tolerance +0.0000 in /-0.0012 in
Secondary Material Application Cast Iron
Secondary Material Application ISO Code K

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