Chicago-Latrobe
Chicago-Latrobe 54053 11/64 in 135° Cobalt TiN Drill Bit
11/64 in cobalt drill bit with 135° split point and TiN coating for hard-metal drilling
- TypeDrill Bits
- MaterialHAWA
- 135° split point starts drilling on contact
- Cobalt steel with TiN coating resists heat and wear
- 11/64 in fractional size matches common fastener specs
- Jobber length gives standard reach for general drilling
- Decimal equivalent 0.1719 in for precise hole planning
Chicago-Latrobe 54053 Cobalt Drill Bit
This Chicago-Latrobe 54053 jobber-length drill bit is made from cobalt steel with a titanium nitride coating. The 135-degree split point reduces wandering and starts holes quickly. It suits metalworkers and maintenance technicians who need a durable bit for general-purpose drilling.
Suits harder metals; not for softwood or large holes
The cobalt construction and TiN finish resist heat and wear when drilling stainless steel, titanium and other tough alloys. Buyers who mainly drill softwood, plastic or aluminium will find standard high-speed steel bits more economical. The 11/64 inch size also limits this bit to that specific diameter.
11/64 inch fractional size
The single specification that decides fit is the 11/64 inch fractional diameter, which equals .1719 inch decimal. If your drawing, tap chart or pilot-hole requirement calls for a different diameter, this bit cannot be used.
Highlights
- 135° split point starts drilling on contact
- Cobalt steel with TiN coating resists heat and wear
- 11/64 in fractional size matches common fastener specs
- Jobber length gives standard reach for general drilling
- Decimal equivalent 0.1719 in for precise hole planning
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
How do I install the 11/64 in split-point cobalt bit in my drill chuck, and what step do people often miss?
Insert the shank fully into the chuck jaws, tighten securely with the key or sleeve, then verify the bit runs true; the step many skip is checking for wobble before drilling.
What maintenance or replacement will the 135° TiN-coated bit need after extended use?
The TiN coating and cobalt edge wear gradually; resharpen the 135° split point when cutting slows, and replace the bit once the coating is gone or the web thins.
At what point does heat become the limiting factor for the .1719 in cobalt bit during sustained drilling?
Heat builds fastest at the cutting lips; once the straw-colour temper shows on the cobalt steel, hardness drops and the bit must cool or be replaced.
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