Chicago-Latrobe
Chicago-Latrobe 42024 135° Split Point Drill Bit 0.3750 in
A 3/8-inch high-speed steel jobber drill bit with a 135-degree split point and TiCN coating for precise drilling
- TypeDrill Bits
- MaterialHAWA
- 135° split point starts on contact without wandering
- TiCN coating on high-speed steel extends edge life
- Jobber length gives standard reach for general drilling
- 3/8 in fractional size matches common chuck capacity
- Wide-land parabolic flute clears chips faster in deep holes
Chicago-Latrobe 42024 Jobber Bit
The Chicago-Latrobe 42024 is a jobber-length drill bit designed for general-purpose drilling in metal. It targets machinists and maintenance technicians who need a reliable high-speed steel cutter for standard workshop tasks.
3/8 inch capacity with 135° split point
The 0.3750-inch diameter handles common fastener clearance and tapping sizes in steel and cast iron. The 135-degree split point reduces walking and lowers thrust, but the bit lacks coolant-through capability for deep-hole chip evacuation.
TiCN coated high-speed steel for machine use
The HAWA high-speed steel substrate with TiCN coating resists wear in production drilling on drill presses or milling machines. The straight shank fits standard three-jaw chucks and collets, freeing the operator from specialised holders.
Highlights
- 135° split point starts on contact without wandering
- TiCN coating on high-speed steel extends edge life
- Jobber length gives standard reach for general drilling
- 3/8 in fractional size matches common chuck capacity
- Wide-land parabolic flute clears chips faster in deep holes
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
Will the 135° split point on this 42024 drill bit start cleanly in the same materials my older bits handle?
The 135° split point is designed to self-centre and reduce walking, so it starts holes reliably in steel and other metals where a standard point might wander.
How can I confirm the 42024 bit is cutting correctly once I begin drilling?
A properly cutting bit produces short, curled chips and advances with steady pressure; if it generates excessive heat, squeals or only makes dust, the point may be dull or the speed too high.
Does the 42024 package include any lubricant or coolant, or must I supply my own?
The bit is non-coolant-through with zero coolant holes, so cutting fluid or paste must be supplied separately; the box contains only the TiCN-coated high-speed steel drill bit itself.
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