Drill America
Drill America 21/32in Cobalt Stub Drill Bit pneumatic accessory
Cobalt stub drill bit with 135-degree split point for self-centering drilling in iron and steel
- TypeDrill Accessories
- 135 degree split point centres itself and reduces thrust
- Manufactured to Aerospace Standard 907 for reliable performance
- Short, rugged construction handles iron and steel alloys
- Stub length suits portable drills and tight spindle clearance
- New condition, ready for automotive and construction use
Drill America 21/32in Cobalt Stub Bit
This cobalt stub drill bit is manufactured to Aerospace Standard 907 for heavy-duty use. The 135-degree split point is self-centering and reduces thrust during operation. It suits portable or machine drilling in iron and steel families. Automotive and construction professionals often choose it where spindle clearance is limited.
Check shank fit and material hardness
Verify that your drill chuck or collet accepts a 21/32in shank before ordering. The bit is designed for ferrous materials and may not perform well in softer alloys. Confirm your machine delivers the rigidity needed for stub-length drilling. California Proposition 65 warnings apply to this product.
Heat resistance and cutting efficiency
Cobalt construction helps the bit withstand higher temperatures generated in tough alloys. The split-point geometry lowers cutting force, which can reduce motor load and vibration. Shorter flute length limits deflection during deep-hole work. No cooling system or lubrication method is specified in the data.
Highlights
- 135 degree split point centres itself and reduces thrust
- Manufactured to Aerospace Standard 907 for reliable performance
- Short, rugged construction handles iron and steel alloys
- Stub length suits portable drills and tight spindle clearance
- New condition, ready for automotive and construction use
Specifications
| Brand | Drill America |
|---|---|
| Type | Drill Accessories |
Questions about this item
Does the Drill America 21/32in cobalt stub drill bit come with a case or any extra accessories, or is it sold as a single bit?
The item is supplied as a single 21/32in cobalt stub drill bit. No case, index or additional accessories are included in the packaging.
How do I know whether the 21/32in size with the 135 degree split point is the right choice for my application?
This 21/32in bit meets Aerospace Standard 907 and has a 135 degree split point that is self-centering and reduces thrust, making it suited for portable or machine drilling in iron and steel families where spindle clearance is limited.
What does the 135 degree split point actually do when the bit is used in a real drill?
The 135 degree split point centres itself on contact and lowers the feed pressure needed, so the bit starts cleanly and cuts efficiently in tough materials such as steel without walking.
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