Chicago-Latrobe - 3.9mm 135° Cobalt Jobber Drill - Gold Finish Finish, Right Hand Cut, Spiral Flute, Straight Shank, 75mm OAL, Split Point
Item #: 57619769
Brand: Chicago-Latrobe
Model #: 47849
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.
Gold provides a polished finish on a cobalt or high speed steel tool. It is commonly used on aluminum alloy, titanium and plastic.
Spiral flutes are constructed with a higher flute angle to remove chips more easily.
| Product Specifications | |
|---|---|
| Drill Bit Size (mm) | 3.90 |
| Drill Bit Size (Decimal Inch) | 0.1535 |
| Drill Point Angle | 135 |
| Drill Bit Material | Cobalt |
| Drill Bit Finish/Coating | Gold Finish |
| Flute Type | Spiral |
| Cutting Direction | Right Hand |
| Shank Type | Straight |
| Coolant Through | No |
| Flute Length (mm) | 43.00 |
| Flute Length (Decimal Inch) | 1.6929 |
| Overall Length (mm) | 75.00 |
| Overall Length (Decimal Inch) | 2.9528 |
| Point Type | Split Point |
| Shank Diameter (mm) | 3.90 |
| Shank Diameter (Decimal Inch) | 0.1535 |
| Spiral Type | Regular Spiral |
| Shank Length (mm) | 32.00 |
| Shank Length (Decimal Inch) | 1.2598 |
| Specification Designation | NAS |
| Web Configuration | Tapered |
| Drill Bit Diameter Tolerance (Decimal Inch) | +0.0000 to -0.0007 |
| Web Thinning | Web-Thinned |
| Specification Number | NAS 907-B |
| Drill Bit Grade | Heavy Duty |
| Series/List | 550ASP |
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