Chicago-Latrobe
Chicago-Latrobe 42016 135 Degree Wide Land Parabolic Jobber Drill Bit
135-degree split-point drill bit cuts 1/4-inch holes in metal with TiCN-coated high-speed steel for extended wear life
- TypeDrill Bits
- MaterialHAWA
- 135-degree split point starts drilling instantly without walking
- Wide-land parabolic flute clears chips faster in deep holes
- TiCN coating on high-speed steel resists wear and heat
- Jobber length handles standard drilling tasks across materials
- 1/4 inch fractional size with .2500 decimal equivalent
135 Degree Split-Point Geometry
The Chicago-Latrobe 42016 is a jobber-length drill bit with a 135-degree split point. It is designed for general-purpose drilling in metal and other materials. The split-point geometry reduces walking and improves centering at the start of the hole. This tool suits machinists and maintenance technicians who need reliable performance across a range of standard drilling tasks.
Parabolic Flute Chip Removal
The parabolic flute design with wide lands promotes efficient chip evacuation during deep-hole drilling. This geometry helps prevent chip packing and reduces heat buildup in the cutting zone. Without internal coolant holes, the bit relies on external lubrication or air blast for cooling. Users drilling deep holes in tough alloys must manage chip clearance manually to avoid binding.
TiCN Coated High-Speed Steel
The bit is manufactured from high-speed steel with a TiCN coating for increased surface hardness and wear resistance. The fractional 1/4 inch size and decimal equivalent of .2500 ensure compatibility with standard collets and chucks. The jobber length provides a balanced reach for most bench and handheld applications. The coating extends tool life in abrasive materials compared to uncoated alternatives.
Highlights
- 135-degree split point starts drilling instantly without walking
- Wide-land parabolic flute clears chips faster in deep holes
- TiCN coating on high-speed steel resists wear and heat
- Jobber length handles standard drilling tasks across materials
- 1/4 inch fractional size with .2500 decimal equivalent
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
Which size should I choose for a 1/4 inch hole?
The bit is a 1/4 inch jobber length drill with a decimal equivalent of .2500, so it matches that hole size directly.
What does the 135 degree point angle do in use?
The 135 degree split point centres quickly, reduces walking and lowers the thrust needed when drilling metal.
How does the TiCN coating affect performance?
The TiCN coating adds hardness and wear resistance, extending tool life when drilling steel and other tough materials.
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