Chicago-Latrobe
Chicago-Latrobe 42787 135° Heavy-Duty Jobber Drill Bit Q .3320
135-degree split-point jobber drill bit in high-speed steel with TiAlN coating, size Q (.3320 decimal)
- TypeDrill Bits
- MaterialHAWA
- 135° split point starts on contact for accurate holes
- High-speed steel with TiAlN coating resists wear and heat
- Q letter size .3320 decimal equivalent fits precise applications
- Jobber length gives standard reach for general drilling
- Heavy-duty construction handles tough materials in daily use
Heavy-Duty Jobber Drill Bit Q .3320
The Chicago-Latrobe 42787 is a jobber-length drill bit sized to letter Q with a decimal equivalent of .3320. It is made from high-speed steel with a TiAlN coating and features a 135-degree split point. The bit is designed for general-purpose drilling in metalworking and maintenance tasks.
Suited for machinists needing a coated split-point
This bit suits users who want a TiAlN-coated high-speed steel drill with a 135-degree split point for reduced walking. It is not for buyers who require coolant-through capability or a different point angle for specialised materials.
135-degree split point with TiAlN coating
The 135-degree split point centres the bit quickly and lowers thrust when drilling hard metals. The TiAlN coating adds wear resistance and helps extend tool life in high-speed applications. No coolant holes are present on this model.
Highlights
- 135° split point starts on contact for accurate holes
- High-speed steel with TiAlN coating resists wear and heat
- Q letter size .3320 decimal equivalent fits precise applications
- Jobber length gives standard reach for general drilling
- Heavy-duty construction handles tough materials in daily use
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
Should I choose the Q .3320 drill bit or a different letter size for my project?
Select the Q .3320 bit when your plans call for a 0.3320-inch hole; other letter sizes correspond to different diameters, so match the bit to the exact hole size you need.
What does the 135-degree split point do once the bit is in the drill?
The 135-degree split point centres the bit without a centre punch and reduces thrust, letting it start cleanly in steel and other hard materials.
How does the TiAlN coating on this high-speed steel bit affect cutting performance?
The TiAlN coating increases surface hardness and heat resistance, allowing higher cutting speeds and longer tool life in tough alloys.
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