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1P494 Non-Coolant-Through High-Speed Steel Jobber-Length Drill Bits 02

$10.28

Bulk orders will be discounted, please contact us.

These drill bits come in standard sizes expressed in fractional inches. They 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. The bits' spiral flutes evacuate chips as the bits drill into a workpiece. These bits have a straight shank that installs into a drill chuck or similar toolholder.

Product Number: 1P494

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  • Description
Mfr Model 57231
Cutting Direction Right Hand
Finish Machining Black Oxide
Measurement System Fractional Inch
Material Machining High Speed Steel
Drill Bit Point Angle 118 °
Drill Bit Point Type Split Point
Primary Material Application Steel
Coolant Fed Non-Coolant Through
Depth Dia Ratio 4xD
Flute Type Spiral
Standards NAS 907 Type A
UNSPSC 23171609
Country of Origin USA (subject to change)
Drill Length Class Jobber Length
Spiral Direction Right Hand
Drill Bit Size 31/64 in
Decimal Equivalent 0.4844
Number of Flutes 2
Flute Length 4-3/8 in
Shank Type Machining Straight
Shank Length 1-1/2 in
Overall Length 5-7/8 in
Drill Point Length 0.1455 in
Drill Diameter Tolerance +0.0000 in/-0.0010 in
Sheeter Drill No
Material Grade Machining General Purpose
Primary Material Application ISO Code P
Secondary Material Application Composite; Nickel; Titanium
Secondary Material Application ISO Code O; S
Series 150K
Maximum Drilling Depth 3-9/32 in
Helix Angle 21° to 34°
Aircraft Drill Yes
Web Thinning Thinned
Web Construction Tapered

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