Drill America
Drill America 15/16 in Cobalt Split Point Stub Drill Bit
Cobalt stub drill bit with 135 degree split point meets Aerospace Standard 907 for iron and steel
- TypeDrill Accessories
- Cobalt construction handles iron and steel alloys
- 135 degree split point centres itself and cuts thrust
- Manufactured to Aerospace Standard 907 for consistency
- Short length fits tight spindle clearances
- 118 degree point on sizes outside 1/16 to 1/2 range
Drill America Cobalt Stub Drill Bit
This Drill America cobalt split-point stub drill bit measures 15/16 in and meets Aerospace Standard 907. The 135 degree split point is self-centering and reduces thrust during drilling. Its short, rugged construction performs well across a broad range of iron and steel materials. It is suited for portable or machine drilling where spindle clearance is limited.
Suited for automotive and construction professionals
This bit suits automotive and construction professionals who need a heavy-duty cobalt drill for screw-machine setups. The stubby length helps where spindle clearance is restricted. Buyers who want more storage in a set or builders who need a second card should look elsewhere. It is not intended for materials outside the iron and steel families.
135 degree split point reduces thrust
The single specification that decides fit is the 135 degree split point, which is self-centering and reduces thrust. This geometry supports accurate starts in hard metals without a centre punch. California Proposition 65 warnings apply because the product contains chemicals known to cause cancer and birth defects. Verify the 15/16 in diameter matches your application before purchasing.
Highlights
- Cobalt construction handles iron and steel alloys
- 135 degree split point centres itself and cuts thrust
- Manufactured to Aerospace Standard 907 for consistency
- Short length fits tight spindle clearances
- 118 degree point on sizes outside 1/16 to 1/2 range
Specifications
| Brand | Drill America |
|---|---|
| Type | Drill Accessories |
Questions about this item
How do I install the 15/16 in cobalt stub drill bit and what step is often missed?
Secure the bit in a drill chuck matching its shank diameter; the step often missed is applying cutting fluid before drilling steel to prevent overheating the cobalt material.
What maintenance or replacement will the 135 degree split point need later?
The split point dulls with use; resharpen it to the original 135 degree angle using a drill sharpener or replace the bit when it no longer self-centers in iron or steel.
What limit appears first when drilling continuously with this Aerospace Standard 907 bit?
Heat buildup in the short flute length limits sustained drilling; pause frequently to clear chips and cool the bit to maintain the 135 degree point integrity.
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