Chicago-Latrobe
Chicago-Latrobe 77661 118° Carbide Tipped Jobber Drill Bit 3/8 in
Carbide tipped jobber drill bit, 3/8 inch size, 118 degree point angle for general drilling
- TypeDrill Bits
- MaterialHAWA
- Carbide tip resists wear in hard materials
- 118-degree point starts cleanly without wandering
- Jobber length reaches deeper holes efficiently
- Bright uncoated finish suits general-purpose drilling
- 3/8 inch fractional size fits standard chucks
Chicago-Latrobe 77661 Carbide Tipped Drill Bit
This Chicago-Latrobe 77661 jobber length drill bit measures 3/8 in with a decimal equivalent of 0.3750 in. It features a 118 degree conventional point angle and a bright uncoated finish. The carbide tipped construction suits drilling in abrasive or hard materials. It is a non coolant through design with zero coolant holes.
Installation notes and common issues
The straight shank fits standard three jaw drill chucks without adapters. Tighten the chuck securely on the smooth shank to prevent slippage under load. Carbide tips are brittle so avoid side pressure or wandering during entry. Running without coolant is possible but excessive heat can damage the tip braze joint.
Compatibility checks before ordering
Verify your drill chuck capacity accepts a 3/8 in shank diameter. Confirm the workpiece material suits carbide tipped tooling rather than high speed steel. Ensure your machine spindle speed and feed rate match the diameter and material. This bit has no coolant holes so external cooling or peck drilling may be needed for deep holes.
Highlights
- Carbide tip resists wear in hard materials
- 118-degree point starts cleanly without wandering
- Jobber length reaches deeper holes efficiently
- Bright uncoated finish suits general-purpose drilling
- 3/8 inch fractional size fits standard chucks
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
How can I confirm the 118° conventional point is cutting cleanly in steel after setup?
Check for consistent chip formation and a round hole at the .3750 decimal equivalent without excessive heat or vibration.
Does the package include any coolant accessories for the non-coolant-through design?
The bit is bright uncoated carbide tipped with zero coolant holes; no coolant accessories are included and must be sourced separately.
Which Chicago-Latrobe 77661 variant should I choose for a standard 3/8 in jobber length hole?
The listed 77661 model is a single 3/8 in fractional inch jobber length drill bit with 118° point angle and carbide tipped construction.
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