Chicago-Latrobe
Chicago-Latrobe 44031 31/64" HSS TiN 118° Jobber Drill Bit
A 31/64 inch high-speed steel jobber drill bit with a 118-degree conventional point and black oxide finish
- TypeDrill Bits
- MaterialHAWA
- High-speed steel construction withstands heavy drilling demands
- Titanium nitride coating extends bit life in tough materials
- 118-degree conventional point starts cleanly without wandering
- 31/64 inch diameter matches precise fractional sizing needs
- Decimal equivalent .4844 simplifies metric conversion calculations
Chicago-Latrobe 44031 Jobber Drill Bit
This Chicago-Latrobe 44031 drill bit is a jobber-length cutting tool made from High Speed Steel with a Titanium Nitride coating. It suits metalworkers and maintenance technicians who need a reliable fractional-size bit for general-purpose drilling tasks. The 118-degree conventional point angle supports accurate starting on flat surfaces.
31/64 inch capacity and material limits
The bit drills a precise 31/64 inch hole, equivalent to 0.4844 decimal inches, providing the exact fractional size required for specific bolt or tap sequences. Its High Speed Steel construction handles common ferrous and non-ferrous metals, though the non-coolant-through design limits performance in deep-hole or high-heat production drilling where internal cooling is necessary.
TiN coating and Prop 65 notice
The Titanium Nitride surface treatment increases surface hardness and reduces friction compared to uncoated High Speed Steel, extending cutting life in repetitive use. A black oxide finish beneath the coating adds corrosion resistance during storage. The product carries a California Proposition 65 warning regarding exposure to a listed chemical known to cause cancer.
Highlights
- High-speed steel construction withstands heavy drilling demands
- Titanium nitride coating extends bit life in tough materials
- 118-degree conventional point starts cleanly without wandering
- 31/64 inch diameter matches precise fractional sizing needs
- Decimal equivalent .4844 simplifies metric conversion calculations
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
Will the 31/64 inch shank fit my older 1/2 inch drill chuck?
The 31/64 inch diameter is 0.4844 inch, so it fits any chuck that opens to at least 1/2 inch.
How can I confirm the 118 degree point is cutting correctly after I start drilling?
The conventional point should produce even chips and a round hole at the 0.4844 inch size without walking.
Does the 44031 bit come in a case or do I need to buy a holder separately?
The bit is sold individually with a black oxide finish; no case or holder is included.
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