Chicago-Latrobe
Chicago-Latrobe 78608 3/8 in 140° Solid Carbide Straight Flute Drill
Solid carbide drill bit with a 140° four-facet point for accurate holes in hard materials
- Precise 140° point angle starts holes accurately
- Solid carbide construction resists wear in tough materials
- Straight flute design clears chips efficiently
- Bright uncoated finish suits general-purpose drilling
- 3/8 in fractional size fits standard chucks
Chicago-Latrobe 78608 Carbide Drill Bit
The Chicago-Latrobe 78608 is a solid carbide straight flute drill bit sized at 3/8 inch with a 140 degree point angle. It is built for machinists and maintenance technicians who need a rigid tool for drilling hardened or abrasive materials. The bright uncoated finish and 4 facet point geometry support accurate hole placement and consistent chip evacuation in CNC or manual operations.
Straight Flute Geometry and Material Benefits
The straight flute design combined with solid carbide construction provides high rigidity and heat resistance during cutting. A 4 facet point reduces walk at entry and improves centring without a pilot hole. The uncoated bright finish avoids coating buildup in non-ferrous or gummy materials while the flute length of 1 13/16 in supports standard drilling depths.
Capacity and Application Limits
This drill handles general purpose drilling in steel, cast iron and non-ferrous alloys where coolant or flood lubrication is available. The 140 degree point angle suits a wide range of workpiece hardness but is not optimised for deep holes beyond the flute length or for high speed drilling in stainless steel without pecking. Users requiring coolant-through capability or coated performance in exotic alloys will need a different tool configuration.
Highlights
- Precise 140° point angle starts holes accurately
- Solid carbide construction resists wear in tough materials
- Straight flute design clears chips efficiently
- Bright uncoated finish suits general-purpose drilling
- 3/8 in fractional size fits standard chucks
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
How often will the 140° four-facet point on this 3/8 in solid carbide drill need resharpening?
The 140° four-facet point on this .375 in solid carbide drill holds its edge longer than high-speed steel; resharpening is only needed when cutting performance drops noticeably.
What is the maximum hole depth I can drill in one pass with the 1 13/16 in flute length?
The 1 13/16 in flute length limits effective chip clearance to roughly that depth; deeper holes require peck drilling to prevent packing.
How much heat builds up in the bright uncoated carbide body during continuous drilling?
The uncoated bright finish on the solid carbide body runs hotter than coated versions; use flood coolant or frequent peck cycles to manage temperature.
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