National Twist Drill - #21 130° Cobalt Jobber Drill - TiN Finish, Right Hand Cut, Parabolic Flute, Straight Shank, 3-1/4" OAL, Split Point
Item #: 58813791
Brand: National Twist Drill
Model #: 027696AW
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.
Titanium Nitride (TiN) is a multi-purpose coating which increases chip flow in softer materials. The heat and hardness resistance allows the tool to run at higher speeds than uncoated tools.
Parabolic flutes are constructed with a wider flute shape for increased chip flow.
| Product Specifications | |
|---|---|
| Drill Bit Size (Wire) | #21 |
| Drill Bit Size (Decimal Inch) | 0.1590 |
| Drill Point Angle | 130 |
| Drill Bit Material | Cobalt |
| Drill Bit Finish/Coating | TiN |
| Flute Type | Parabolic |
| Cutting Direction | Right Hand |
| Shank Type | Straight |
| Coolant Through | No |
| Flute Length (Inch) | 2-1/8 |
| Flute Length (Decimal Inch) | 2.1250 |
| Overall Length (Decimal Inch) | 3.2500 |
| Overall Length (Inch) | 3-1/4 |
| Point Type | Split Point |
| Web Configuration | Tapered |
| Drill Bit Diameter Tolerance (Decimal Inch) | +0.0000 to -0.0007 |
| Web Thinning | Web-Thinned |
2% Off All Online Orders
Use Code: 2%OFF
Best Price Guarantee - Email Us A Better Published Price and We'll Beat It