National Twist Drill - 0.29" 135° Spiral Flute Cobalt Screw Machine Drill Bit - Gold Finish Finish, Right Hand Cut, 1-9/16" Flute Length, 2-3/4" OAL, Split Point, Straight Shank
Item #: 58832759
Brand: National Twist Drill
Model #: 017885AW
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 of a higher flute angle to remove chips easier.
| Product Specifications | |
|---|---|
| Drill Bit Size (Decimal Inch) | 0.2900 |
| Drill Bit Size (Letter) | L |
| Drill Point Angle | 135 |
| Drill Bit Material | Cobalt |
| Drill Bit Finish/Coating | Gold Finish |
| Flute Type | Spiral |
| Cutting Direction | Right Hand |
| Shank Type | Straight |
| Flute Length (Inch) | 1-9/16 |
| Flute Length (Decimal Inch) | 1.5625 |
| Overall Length (Inch) | 2-3/4 |
| Overall Length (Decimal Inch) | 2.7500 |
| Point Type | Split Point |
| Threaded Shank | No |
| Web Configuration | Tapered |
| Drill Bit Diameter Tolerance (Decimal Inch) | +0.0000 to -0.0010 |
| Web Thinning | Web-Thinned |
| Drill Bit Grade | Heavy Duty |
| Series/List | 316C |
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