Rocky Mountain Twist - #21 135° High Speed Steel Jobber Drill - Oxide/Gold Finish, Right Hand Cut, Parabolic Flute, Straight Shank, 3-1/4" OAL, Split Point
Item #: 57615262
Brand: Rocky Mountain Twist
Model #: 95004921
Exact Tooling IR#: 04
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.
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.
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 | Oxide/Gold |
| Flute Type | Parabolic |
| Cutting Direction | Right Hand |
| Shank Type | Straight |
| Coolant Through | No |
| Flute Length (Inch) | 1-5/8 |
| Flute Length (Decimal Inch) | 1.6250 |
| Overall Length (Decimal Inch) | 3.2500 |
| Overall Length (Inch) | 3-1/4 |
| Point Type | Split Point |
| Shank Diameter (Decimal Inch) | 0.1590 |
| Web Configuration | Tapered |
| Drill Bit Diameter Tolerance (Decimal Inch) | +0.0000 to -0.0007 |
| Number of Flutes | 2 |
| Web Thinning | Web-Thinned |
| Drill Bit Grade | Heavy Duty |
| Series/List | JH522P |
2% Off All Online Orders
Use Code: 2%OFF
Best Price Guarantee - Email Us A Better Published Price and We'll Beat It