Cleveland C70107 Cobalt Drill Bit 6.1 Mm 135 Deg

Product Description

The CLEVELAND C70107 is a jobber-length drill bit designed for heavy-duty metal drilling in professional trade and industrial applications. Built from M42 cobalt high-speed steel with a gold oxide coating, this bit resists heat buildup and wear during prolonged use in hard or abrasive materials. The 135-degree split point starts on contact without a center punch, reducing walking on curved or flat surfaces. At 3.98 inches overall length with a 2.48-inch spiral flute, it delivers the reach and chip evacuation needed for consistent through-hole drilling. Installers and fabricators working in HVAC, mechanical, and electrical trades rely on this bit diameter for common fastener and conduit prep work.

The C70107 is suited for drilling aluminum as its primary workpiece material, and it performs well in other non-ferrous metals and softer steels. The 6.1 mm diameter (0.2402 inches decimal) and straight-cylindrical shank seat securely in standard drill chucks without slipping. The regular spiral flute pattern and web-thinned, tapered web geometry promote efficient chip removal and reduce cutting force. This bit fits within the NAS 907 Type J specification, making it a recognized standard in aerospace and precision fabrication environments.

Key Features

• M42 cobalt steel construction for heavy-duty drilling performance and heat resistance
• 135-degree split point eliminates need for center punching and reduces bit walking
• Gold oxide coating reduces friction and extends cutting edge life
• Web-thinned tapered web reduces cutting force and improves chip flow
• Straight-cylindrical shank fits standard 3-jaw drill chucks
• Meets NAS 907 Type J specification for precision and consistency

Compatibility

Designed as a jobber-length replacement drill bit for use in standard drill chucks accepting a 0.2402-inch straight-cylindrical shank, suitable for aluminum and compatible workpiece materials as specified by the NAS 907 Type J standard.

Installation Notes

Install in a drill press, hand drill, or drill driver with a chuck rated for the shank diameter before energizing the tool. Secure the workpiece firmly before drilling to prevent rotation or movement. Use appropriate cutting fluid when drilling metals to extend bit life and improve hole finish. Follow applicable shop safety standards and wear eye protection during all drilling operations.