Chicago-Latrobe
Chicago-Latrobe 70228 7/16" HSS TiN 118° Jobber Drill Bit pneumatic accessory
A 7/16 inch high-speed steel jobber drill bit with TiN coating and a 118-degree conventional point for general-purpose drilling
- TypeDrill Bits
- MaterialHAWA
- 7/16 inch fractional sizing fits standard drill chucks
- 118 degree conventional point starts holes without walking
- TiN coating reduces friction and extends bit life
- High speed steel construction handles general purpose drilling
- Decimal equivalent .4375 simplifies metric conversion
7/16" HSS TiN Jobber Drill Bit
The Chicago-Latrobe 70228 is a 7/16 inch fractional drill bit made from high speed steel with a titanium nitride coating. It uses a conventional 118 degree point angle for general purpose drilling. The decimal equivalent is .4375 inches. It suits mechanics and metalworkers needing a durable bit for handheld or press operations.
Build integration and clearance
The straight shank fits standard three jaw chucks on pneumatic or electric drills without adapters. Jobber length provides standard reach for through holes in sheet metal, plate or structural steel. The TiN coating reduces friction so the bit runs cooler and clears chips efficiently without coolant holes. It frees the operator from frequent bit changes in repetitive drilling tasks.
Coating and geometry benefits
The titanium nitride surface treatment increases surface hardness and wear resistance compared to uncoated high speed steel. The 118 degree conventional point centers easily on flat surfaces and reduces walking at the start of the cut. No coolant through holes means the bit relies on external lubrication or dry cutting in suitable materials. The coating extends service life in ferrous metals and abrasive alloys.
Highlights
- 7/16 inch fractional sizing fits standard drill chucks
- 118 degree conventional point starts holes without walking
- TiN coating reduces friction and extends bit life
- High speed steel construction handles general purpose drilling
- Decimal equivalent .4375 simplifies metric conversion
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
How long will the TiN coating hold up when drilling steel all day?
The titanium nitride coating on the high-speed steel body reduces wear and heat buildup, extending bit life during sustained drilling in ferrous metals.
Does the 118-degree point run cooler than a split-point bit in continuous use?
The conventional 118-degree point generates more friction and heat than a split-point design, so expect higher temperatures during prolonged drilling cycles.
What shank size does my drill chuck need for this 7/16-inch bit?
The bit uses a straight round shank matching its 7/16-inch diameter, so a chuck capacity of at least 7/16 inch is required.
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