Cleveland C70096 Cobalt Jobber Drill Bit 4.9 Mm

Product Description

The CLEVELAND C70096 is a cobalt jobber-length drill bit engineered for heavy-duty drilling in ferrous and non-ferrous materials. Built from M42 cobalt high-speed steel with a gold oxide coating, this bit delivers extended tool life and heat resistance compared to standard HSS tooling. It features a 135-degree split point for fast penetration and reduced walking at startup, and a web-thinned, tapered web for lower thrust requirements. The right-hand spiral flute geometry evacuates chips efficiently. This bit is sized at 4.9 mm (0.1929 inches) in diameter with an overall length of 86 mm (3.386 inches), making it a standard jobber-length tool suited for handheld drills, drill presses, and CNC applications.

The C70096 is rated for use in aluminum as its primary workpiece material and falls within the 4.00 to 5.00 mm diameter range class. It is appropriate for machine shops, fabrication, HVAC sheet metal work, electrical panel and conduit drilling, and general metalworking applications requiring close-tolerance hole sizing. The straight-cylindrical shank fits standard drill chucks without adaptation. This bit meets NAS 907 Type J specifications, making it suitable for aerospace and precision manufacturing environments where controlled tolerances are required.

Key Features

• M42 cobalt steel construction for elevated heat and wear resistance
• 135-degree split point reduces thrust and eliminates center-punch requirement on most materials
• Gold oxide coating provides lubricity and corrosion resistance during use
• Web-thinned tapered web lowers drilling force and improves chip flow
• Regular right-hand spiral flute with 2-flute configuration for efficient chip evacuation
• Meets NAS 907 Type J specification for precision and aerospace applications

Compatibility

Designed for use in any standard drill chuck accepting a straight-cylindrical shank; compatible with handheld drills, drill presses, and CNC machining centers within the 4.00 to 5.00 mm diameter tooling range.

Installation Notes

Installation of drill bits should be performed by qualified machinists or trade professionals following standard tooling practices. Ensure the chuck or collet is fully secured before operating. Always power down and lock out the machine before changing tooling. Use appropriate cutting fluid or coolant for the workpiece material to extend bit life, noting this bit does not support coolant-through delivery.