Chicago-Latrobe
Chicago-Latrobe 44912 135 Degree Cobalt Jobber Drill 3/16 in
135-degree split-point cobalt jobber drill bit cuts 3/16 inch holes with TiAlN coating for heat resistance
- TypeDrill Bits
- MaterialHAWA
- Cobalt construction resists heat and wear
- 135-degree split point starts holes without wandering
- TiAlN coating extends cutting life
- 3/16 inch diameter matches common fastener sizes
- Jobber length provides standard reach for general drilling
Chicago-Latrobe 44912 Cobalt Drill Bit
The Chicago-Latrobe 44912 is a 3/16 inch jobber length drill bit made from cobalt with a TiAlN coating. Its 135 degree split point design allows for accurate starting without a centre punch. The fractional inch size has a decimal equivalent of .1875 and features no coolant holes. This accessory suits metalworking tasks in automotive or general workshop environments.
Fits Standard Chucks for Metal Drilling
The bit installs directly into any drill chuck that accepts a 3/16 inch shank, requiring no special adapters or coolant systems. Its non-coolant-through construction simplifies the setup for hand-held or press operation. The TiAlN surface treatment reduces friction and heat buildup during extended use. This frees the operator from frequent bit changes when drilling tough alloys.
Ideal for Hard Metal Applications
Builders working with stainless steel, titanium or high-strength alloys will benefit from the cobalt substrate and split point geometry. Shops that primarily drill wood, plastics or soft aluminium may find a standard high-speed steel bit more economical. Users needing through-tool coolant delivery or larger diameter capacity should evaluate alternative designs. The 135 degree angle is optimised for rigid setups rather than flexible hand drilling.
Highlights
- Cobalt construction resists heat and wear
- 135-degree split point starts holes without wandering
- TiAlN coating extends cutting life
- 3/16 inch diameter matches common fastener sizes
- Jobber length provides standard reach for general drilling
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
How long does the 135-degree split point stay sharp when drilling stainless steel all day?
The cobalt HAWA body with TiAlN coating resists heat and wear far longer than standard HSS, keeping the 135-degree split point sharp through extended stainless runs.
Does the TiAlN coating cut heat enough to run the bit continuously without coolant?
Yes, the TiAlN layer reduces friction and dissipates heat so the bit runs cooler even in non-coolant-through applications.
Will the 3/16 inch shank fit my 1/2 inch drill chuck without an adapter?
The 3/16 inch diameter shank fits any standard three-jaw chuck that accepts up to 1/2 inch, so no adapter is needed.
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