Chicago-Latrobe
Chicago-Latrobe 54116 135° Cobalt Jobber Drill Bit Q .3320 TiN Split Point
Cobalt jobber drill bit with 135° split point and TiN coating for hard-metal drilling
- TypeDrill Bits
- MaterialHAWA
- 135° split point starts on contact without wandering
- Cobalt steel withstands heat in hard metals
- Titanium nitride coating reduces friction and wear
- Jobber length gives standard reach for general drilling
- Size Q (.3320) fits precise letter-gauge holes
Chicago-Latrobe 54116 Cobalt Jobber Bit
This drill bit is made from cobalt steel with a titanium nitride coating for extended wear resistance. It targets machinists and maintenance technicians who need reliable hole-making in tough alloys. The 135-degree split point reduces walking and starts cleanly on contact. Letter size Q provides a precise 0.3320-inch diameter for specific clearance or tapping requirements.
Sustained drilling performance
The cobalt substrate maintains hardness at elevated temperatures generated during continuous cutting. TiN coating lowers friction and resists built-up edge when drilling stainless steel, titanium or high-strength steels. Split-point geometry distributes thrust evenly, limiting chatter during deep holes. The jobber-length flute clears chips efficiently without coolant-through capability.
Build quality and daily use
Heavy-duty construction withstands repeated sharpening and rigorous shop conditions. Straight shank fits standard three-jaw chucks and quick-change adapters without modification. No coolant holes mean simpler setup for dry or flood-lubricant applications. The 0.3320-inch decimal equivalent matches fractional and metric tap charts directly.
Highlights
- 135° split point starts on contact without wandering
- Cobalt steel withstands heat in hard metals
- Titanium nitride coating reduces friction and wear
- Jobber length gives standard reach for general drilling
- Size Q (.3320) fits precise letter-gauge holes
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
Does the 135° split point on the 54116 cobalt bit reduce heat buildup when drilling steel all day?
The 135° split point centres the bit without a pilot hole, lowering thrust and friction so the cobalt body runs cooler during extended drilling in hard metals.
What shank style does the 54116 need to fit my drill chuck?
The 54116 is a straight-shank jobber bit; it fits any standard three-jaw chuck that accepts a .3320 inch diameter shank.
Will the .3320 inch 54116 bit work in a 3/8 inch keyed chuck I already own?
Yes, a 3/8 inch chuck opens wide enough for the .3320 inch shank, so the bit seats securely in your existing chuck.
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