Chicago-Latrobe
Chicago-Latrobe 44231 31/64 in 118 Degree Jobber Drill Bit
A 31/64 inch high-speed steel jobber drill bit with a 118 degree conventional point for general purpose drilling
- TypeDrill Bits
- 31/64 in size drills precise fractional holes
- 118-degree conventional point starts cleanly on contact
- High-speed steel resists wear in general-purpose use
- Bright uncoated finish suits dry drilling applications
- Jobber length reaches standard drilling depths
Drill Bit Size and Angle
The Chicago-Latrobe 44231 is a jobber length drill bit sized at 31/64 in with a 118 degree conventional point. It is made from high speed steel and features a bright, uncoated finish. This fractional inch bit suits general purpose drilling tasks in metal, wood or plastic.
Build Fit and Clearance
The bit uses a standard straight shank that fits common drill chucks without adapters. Its jobber length provides typical reach for bench or handheld drilling operations. The non-coolant through design with zero coolant holes means no external coolant feed is required.
Sustained Load Behaviour
High speed steel construction maintains hardness during extended drilling cycles. The 118 degree point angle distributes cutting forces evenly across the lips. Bright finish reduces friction buildup when drilling deep holes without coolant.
Highlights
- 31/64 in size drills precise fractional holes
- 118-degree conventional point starts cleanly on contact
- High-speed steel resists wear in general-purpose use
- Bright uncoated finish suits dry drilling applications
- Jobber length reaches standard drilling depths
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
Questions about this item
How quickly does the 118-degree point angle dull when drilling steel all day?
The 118-degree conventional point is designed for general-purpose drilling in steel, but sustained high-speed use will wear the uncoated high-speed steel cutting edges faster than a coated or split-point bit.
Does the bright uncoated finish run hotter than a black-oxide or TiN bit during continuous drilling?
Yes, the uncoated surface generates more friction and heat than oxide or nitride coatings, so cutting fluid and slower feed rates are recommended for extended sessions.
What shank size must my drill chuck accept for this 31/64 in bit?
The bit has a straight shank matching its 31/64 in (0.4844 in) diameter, so the chuck must open to at least that size.
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