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439Y28 Cobalt Screw-Machine Length Drill Bits

$71.96

Bulk orders will be discounted, please contact us.

The TiCN coating on these drill bits protects them from wear and is harder and more wear-resistant than a TiN coating. Parabolic-flute drill bits have wide, deep flutes that improve chip flow and heat dissipation, which means feed rates do not need to be reduced as the drill moves deeper into the workpiece.

Product Number: 439Y28

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  • Description
Mfr Model C15288
Measurement System Fractional Inch
Drill Bit Size 21/32 in
Decimal Equivalent 0.6562
Overall Length 4-1/2 in
Shank Diameter 21/32 in
Shank Type Machining Straight
Finish Machining TiCN
Material Machining Cobalt
Primary Material Application Aluminum; Brass; Bronze; Copper; Steel
UNSPSC 27112801
Country of Origin USA (subject to change)
Cutting Direction Right Hand
Flute Length 2-7/8 in
Flute Type Parabolic
Standards ASME B94.11M-1993
Drill Bit Point Angle 135 °
Drill Bit Point Type Split Point
Number of Flutes 2
Spiral Direction Right Hand
Helix Angle 40 °
Depth Dia Ratio 10xD
Primary Material Application ISO Code N; P
Material Grade Machining M42
Drill Length Class Screw Machine Length
Sheeter Drill No
Drill Point Length 0.1359 in
Shank Length 1-5/8 in
Coolant Fed Non-Coolant Through
Drill Diameter Tolerance +0.0000 in /-0.0012 in
Secondary Material Application Cast Iron; Stainless Steel
Secondary Material Application ISO Code K; M

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