Cleveland
Cleveland C15098 Screw Machine Drill Bit #8 135° Split Point Cobalt TiAlN
A #8 cobalt drill bit with a 135-degree split point and TiAlN coating for precise right-hand cutting
- TypeDrill Bits
- 135° split point starts on contact for accurate holes
- Cobalt steel with TiAlN coating resists heat and wear
- #8 size with .1990 decimal equivalent fits precise applications
- Right-hand cutting direction suits standard drill chucks
- Non-coolant through design simplifies setup for short-run drilling
Cleveland #8 Cobalt Screw Machine Bit
The Cleveland C15098 is a #8 size screw machine drill bit built from cobalt steel with a TiAlN coating. It features a 135 degree split point designed for accurate starts and reduced walking. The right hand cutting direction suits standard drilling operations. This accessory is intended for use with compatible power tools in professional and industrial settings.
For precision metal drilling, not wood or masonry
This bit suits machinists and technicians drilling precise holes in hard metals such as stainless steel or titanium alloys. The cobalt construction and TiAlN coating resist heat and wear during repetitive screw machine cycles. It is not for woodworkers needing brad points, nor for masons requiring carbide tips for concrete. Buyers who want coolant through capability should look at a different design.
135 degree split point geometry
The 135 degree split point is the specification that determines if this bit matches the application. It centers quickly without a pilot hole and reduces thrust force in tough alloys. The decimal equivalent of the #8 size is .1990 inches. The non coolant through design means chips evacuate through the flutes only. Confirm the point angle and split point requirement before ordering.
Highlights
- 135° split point starts on contact for accurate holes
- Cobalt steel with TiAlN coating resists heat and wear
- #8 size with .1990 decimal equivalent fits precise applications
- Right-hand cutting direction suits standard drill chucks
- Non-coolant through design simplifies setup for short-run drilling
Specifications
| Brand | CLEVELAND |
|---|---|
| Type | Drill Bits |
Questions about this item
How often will the cobalt split-point tip need resharpening?
Cobalt steel holds its edge longer than high-speed steel, so the 135-degree split point stays sharp through many holes before resharpening is required.
What limits continuous drilling before the bit overheats?
The TiAlN coating reduces heat buildup, but sustained high-speed drilling without coolant will eventually soften the cobalt substrate.
How hot does the shank get during all-day use?
The coating transfers less heat to the shank, yet prolonged right-hand cutting in steel will make the shank too hot to touch bare-handed.
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