Chicago-Latrobe
Chicago-Latrobe 47360 12.80mm HSS 118° Jobber Drill Bit
A 12.80 mm high-speed steel jobber drill bit with a 118-degree radial point and black oxide finish
- TypeDrill Bits
- MaterialHAWA
- 8 mm diameter suits medium holes
- 118° point angle centres quickly in steel
- High-speed steel resists heat during drilling
- Black oxide finish reduces friction and wear
- Radial point geometry improves chip evacuation
Chicago-Latrobe 47360 12.80mm Jobber Drill Bit
This high-speed steel jobber drill bit measures 12.80 mm with a 118-degree point angle. It suits metalworkers and maintenance technicians drilling precise holes in steel and alloy. The radial point design aids accurate starting without a centre punch. It is not for operators needing coolant-through capability or carbide-tipped longevity.
12.8 mm capacity with .5039 decimal equivalent
The 12.8 mm diameter handles standard structural and fabrication hole sizes up to this metric dimension. Black oxide finish adds lubricity and corrosion resistance during extended drilling cycles. The bit lacks coolant holes, so deep-hole chip evacuation relies on frequent pecking. It runs out of effective reach beyond the standard jobber flute length.
Thermals and power draw in normal use
High-speed steel construction manages heat build-up during intermittent drilling in mild steel. The 118-degree point reduces thrust force, lowering motor load on handheld or bench machines. Black oxide surface retains cutting fluid film, limiting friction at the cutting lips. No coolant-through design means external lubrication is required for sustained high-speed operation.
Highlights
- 8 mm diameter suits medium holes
- 118° point angle centres quickly in steel
- High-speed steel resists heat during drilling
- Black oxide finish reduces friction and wear
- Radial point geometry improves chip evacuation
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
Will the 12.80mm shank fit the chuck on my older drill press?
The bit uses a standard jobber shank that matches the 12.8 mm diameter, so any chuck accepting that size will hold it securely.
How can I confirm the 118 degree point is cutting correctly after installation?
Look for clean, round holes with minimal wandering at the start; the radial point design centres itself without a pilot hole.
Does the 47360 come with a case or just the single TiN coated bit?
Only the individual 12.8 mm HSS drill bit is supplied; no case, index or additional accessories are included.
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