Bosch Cobalt Drill Bits
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Bosch Cobalt Drill Bits
This is a 5/16 in. cobalt drill bit with a split point, built for drilling stainless steel, cast iron, high-carbon steel and other hard metals that dull a standard high-speed-steel bit quickly.
Features and Common Uses
- 5/16 in. diameter cobalt jobber-length drill bit
- Split point starts on contact without a center punch or walking
- Cobalt steel construction resists heat buildup for longer life in hard metals
- 135-degree split point geometry, standard for cobalt metal-drilling bits of this size
Commonly used for:
- Drilling stainless steel, cast iron and high-carbon steel
- General metal fabrication and machine shop work
- Any job where a standard HSS bit dulls too fast
Specifications
| Diameter | 5/16 in. |
|---|---|
| Material | Cobalt steel |
| Point Style | 135-degree split point |
| Overall Length | Approx. 4-1/2 in. (standard jobber length for this diameter) |
| Pack Quantity | 1 |
The specifications above reflect the standard published dimensions for a 5/16 in. cobalt jobber-length split-point drill bit of this class rather than a specific manufacturer's data sheet. Confirm the brand and SKU match with the supplier before ordering this item specifically as a Bosch part.
Frequently Asked Questions
What is a split point good for?
It lets the bit bite in and start drilling on contact, without walking across the surface or needing a center punch first.
Can this drill stainless steel?
Yes, cobalt bits are the standard choice for stainless steel, cast iron and other hard metals that dull a plain HSS bit quickly.