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439Z57 High-Speed Steel Screw-Machine Length Drill Bits

$9.78

Bulk orders will be discounted, please contact us.

These screw-machine length drill bits meet National Aerospace Standards (NAS) 907 Type C for drill bits used in aircraft repair and production. They have a bright finish that is not affected when their cutting edges are resharpened. Spiral-flute drill bits evacuate chips as the bits drill into a workpiece.

Product Number: 439Z57

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  • Description
Mfr Model C70303
Measurement System Letter
Drill Bit Size Y
Decimal Equivalent 0.4040
Overall Length 3-5/16 in
Shank Diameter 13/32 in
Shank Type Machining Straight
Finish Machining Bright (Uncoated)
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 1-15/16 in
Flute Type Spiral
Standards NAS 907 Type C
Drill Bit Point Angle 135 °
Drill Bit Point Type Split 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 Heavy Duty
Drill Length Class Screw Machine Length
Sheeter Drill No
Drill Point Length 0.0000
Shank Length 1-3/8 in
Coolant Fed Non-Coolant Through
Drill Diameter Tolerance +0.0000 in /-0.0010 in
Secondary Material Application Aluminum; Brass; Bronze; Copper; Stainless Steel
Secondary Material Application ISO Code M; N

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