Step Drill Bit Series Step Drill Bit Series Range
SPEED
3 Spiral Flute Bright Finish
4 Spiral Flute TiN Coating
200
1 Straight Flute Bright Finish
2 Straight Flute TiN Coating
100
LIFE
100
250
A
B
C
Image
FLUTE
SURFACE
SHANK
Three Flat or 1/4” Hex
1
Straight
Bright Finish
Three Flat or 1/4” Hex
2
Straight
Titanium Coating
Three Flat or 1/4” Hex
3
Spiral
Bright Finish
Three Flat or 1/4” Hex
4
Spiral
Titanium Coating
Material Chart
Cu,Ni, Ms,Zn
Plastics PVC
MATERIAL
Description
Plastic
Non-Ferrous Metal* Sheet Metal
Alloy Steel
Cast Iron
1
AA
AA
AA
A
A
Straight flute
Straight flute Titanium coating
2
AA
AA
AA
A
A
3
AA
AA
AA
A
A
Spiral flute
Spiral flute Titanium coating
4
AA
AA
AA
A
A
AA : Recommended A : Acceptable
*Non Ferrous Metal - Copper, Nickel and Zinc
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