High-performance point design stabilizes on entry for exceptional hole size and cylindricity while also allowing for low thrust force and extended tool life
Internal coolant hole improves coolant flow to extend tool life and aid in chip evacuation
4-margin design improves hole straightness and roundness while providing improved stability for difficult applications like cross holes and when exiting on angle
Proprietary Ti-NAMITE-X coating and industry leading carbide substrate provides exceptional wear resistance and toughness for demanding applications
Recommended for materials ≤ 50HRc (475 Bhn)
Product Specifications
Manufacturer Part Number
66768
Size
8.90mm
Cutting Diameter (Decimal Inch)
0.350″
Cutting Diameter (mm)
8.90mm
Shank Diameter (Decimal Inch)
0.394″
Shank Diameter (mm)
10.00mm
Flute Length (Decimal Inch)
5.315″
Flute Length (mm)
135.00mm
Usable Length (Decimal Inch)
4.789″
Usable Length (mm)
121.65mm
Overall Length (Decimal Inch)
7.165″
Overall Length (mm)
182.00mm
Shank Length (Decimal Inch)
1.575″
Shank Length (mm)
40.00mm
Shank Diameter Tolerance
h6
Point Angle (Degree)
137 Degree
Flute Type
Spiral
Number of Margins
4
Number of Flutes
2
Reach (xD)
12xD
Center Cutting
No
Double Margins
Yes
High Performance
Yes
Self Centering
Yes
Coating
TX (Ti-NAMITE-X)
Product Type
Extra Long Drill Bit
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