Cleveland C70097 5mm Cobalt Jobber Drill Bit 135 Split Point

Product Description

The CLEVELAND C70097 is a cobalt jobber-length drill bit engineered for demanding metal drilling applications. Manufactured from M42 high-cobalt steel and finished with a gold oxide coating, this bit delivers extended tool life in tough materials. The 135-degree split point reduces walking and requires no center punch on most surfaces. At 3.39 inches overall length with a 2.047-inch spiral flute, it fits standard jobber-length toolholders. The straight-cylindrical shank seats securely in drill chucks and quick-change adapters. Web thinning reduces thrust load and improves chip evacuation, making it well suited for production drilling and precision hole placement.

This bit is sized at 5 mm (0.1968 inches) and is rated heavy duty per NAS 907 Type J specification, placing it in the 0.1500 to 0.2000 inch drill diameter range. It is well suited for drilling aluminum and other non-ferrous metals, as well as general-purpose applications in steel and stainless where cobalt grade tooling is required. Machinists, tool-and-die workers, fabricators, and maintenance technicians working in shops, field, or plant environments rely on this series for consistent results in repetitive drilling cycles.

Key Features

• M42 cobalt steel construction for increased heat and wear resistance over standard HSS bits
• 135-degree split point starts on contact without center punching and reduces thrust
• Gold oxide coating provides lubricity and corrosion resistance during operation
• Web-thinned tapered web improves chip flow and lowers cutting force
• Right-hand spiral flute with regular helix evacuates chips efficiently
• Meets NAS 907 Type J specification for dimensional consistency

Compatibility

Designed as an OEM-style replacement or direct tooling selection for standard drill chucks and quick-change systems accepting a straight-cylindrical shank in the 0.1969-inch shank diameter range. Primary workpiece material listed by manufacturer is aluminum; the M42 cobalt grade also supports drilling in harder ferrous materials.

Installation Notes

Secure the straight-cylindrical shank fully into the drill chuck before operation and verify runout before beginning a drilling cycle. Power down the machine and follow lockout/tagout procedures before changing bits or adjusting toolholders. Use appropriate cutting fluid or coolant when drilling ferrous metals to extend tool life, noting this bit does not support coolant-through delivery. Ensure workpiece is clamped securely to prevent movement and avoid tip breakage.