National Twist Drill - #21 135° High Speed Steel Jobber Drill
Item #: 66125360
Brand: National Twist Drill
Model #: 049221AW
Features and Benefits
High speed steel (HSS) provides good wear resistance and can be used in general purpose applications for both ferrous and nonferrous materials.
Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic.
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 | 135 |
| Drill Bit Material | High Speed Steel |
| Drill Bit Finish/Coating | Bright |
| 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 |
| Series/List | 292 |
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