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439J79 High-Speed Steel Screw-Machine Length Drill Bits

$46.22

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. Spiral-flute drill bits evacuate chips as the bits drill into a workpiece.

Product Number: 439J79

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  • Description
Mfr Model 48558
Measurement System Fractional Inch
Drill Bit Size 29/32 in
Decimal Equivalent 0.9062
Overall Length 5-5/8 in
Shank Diameter 29/32 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 3-5/8 in
Flute Type Spiral
Standards ANSI
Drill Bit Point Angle 118 °
Drill Bit Point Type Conventional 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 General Purpose
Drill Length Class Screw Machine Length
Sheeter Drill No
Drill Point Length 0.2723 in
Shank Length 2 in
Coolant Fed Non-Coolant Through
Drill Diameter Tolerance +0.0000 in /-0.0012 in
Secondary Material Application Medium Carbon Steel; Stainless Steel
Secondary Material Application ISO Code M; P

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