Precision Twist Drill - 1-3/8", 4MT 135° Point Cobalt Taper Shank Drill Bit - Oxide/Gold Finish, 8-7/8" Flute Length, 14-1/2" OAL, Spiral Flute, Series 209CO
Item #: 78531381
Brand: Precision Twist Drill
Model #: 021424
Exact Tooling IR#: 04
Features and Benefits
Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Oxide gold finish provides a polished finish and prevents chip building, galling and welding on a workpiece. It is commonly used on low carbon, stainless steel and ferrous metals.
Spiral flutes are constructed with a higher flute angle to remove chips more easily.
| Product Specifications | |
|---|---|
| Drill Bit Size (Inch) | 1-3/8 |
| Drill Bit Size (Decimal Inch) | 1.3750 |
| Drill Point Angle | 135 |
| Shank Taper Designation | 4MT |
| Drill Bit Material | Cobalt |
| Drill Bit Finish/Coating | Oxide/Gold |
| Flute Type | Spiral |
| Overall Length (Inch) | 14-1/2 |
| Flute Length (Inch) | 8-7/8 |
| Spiral Type | Regular Spiral |
| Cutting Direction | Right Hand |
| Point Type | Notched |
| Web Thinning | Web-Thinned |
| Specification Designation | ANSI |
| Drill Bit Grade | General Purpose |
| Series/List | 209CO |
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