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439A37 High-Speed Steel Extended-Length Drill Bits

$28.34

Bulk orders will be discounted, please contact us.

The black-oxide finish on these bits retains lubricants to improve their wear resistance and chip flow. Black-oxide bits should only be used for drilling ferrous metals. Spiral-flute drill bits evacuate chips as the bits drill into a workpiece. These drill bits do not have coolant holes, so a separate hose is required to bring coolant to the bits' tip if it is needed.

Product Number: 439A37

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  • Description
Mfr Model 50750
Measurement System Fractional Inch
Drill Bit Size 7/16 in
Decimal Equivalent 0.4375
Maximum Drilling Depth 9 in
Overall Length 12 in
Shank Type Machining Straight
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 9 in
Flute Type Spiral
Standards Not Rated
Drill Bit Point Angle 118 °
Drill Bit Point Type Notched Point
Number of Flutes 2
Spiral Direction Right Hand
Helix Angle 28°
Depth Dia Ratio 4xD
Shank Dia 7/16 in
Primary Material Application ISO Code K; P
Material Grade Machining General Purpose
Drill Length Class Extra Long
Sheeter Drill No
Drill Point Length 0.1314 in
Shank Length 3 in
Coolant Fed Non-Coolant Through
Drill Diameter Tolerance +0.0000 in /-0.0010 in
Secondary Material Application Aluminum; Brass; Bronze; Composite; Copper; Graphite; Steel
Secondary Material Application ISO Code N; O; P

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