National Twist Drill - 5/16" Body Diam, 90°, 3-7/64" OAL, Cobalt Spotting Drill
Item #: 58816141
Brand: National Twist Drill
Model #: 027492AW
Features and Benefits
Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys.
Bronze oxide, is a surface treatment that prevents chip building, galling and welding on the workpiece. It is commonly used on low carbons, stainless steel and ferrous metals.
| Product Specifications | |
|---|---|
| Body Diameter (Inch) | 5/16 |
| Body Diameter (Decimal Inch) | 0.3125 |
| Drill Point Angle | 90 |
| Spotting Drill Material | Cobalt |
| Spotting Drill Finish/Coating | Bronze Oxide |
| Overall Length (Inch) | 3-7/64 |
| Flute Length (Decimal Inch) | 0.9840 |
| Shank Diameter (Decimal Inch) | 0.3125 |
| Cutting Direction | Right Hand |
| Tool Application | Centering; Chamfering; Drilling; Spotting |
| Insertable Cutter Head | No |
| Tapered | No |
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