Cleveland C70160 Jobber Drill Bit Wire 27 Cobalt

Product Description

The CLEVELAND C70160 is a jobber-length drill bit designed for precision drilling in metal fabrication and production environments. Built from M42 cobalt high-speed steel with a gold oxide coating, this bit handles tough materials where standard HSS bits fall short. It carries a 135-degree split point that reduces walking and allows drilling without a center punch on flat stock. At 3 inches overall length with a 0.1440-inch diameter, it is sized for wire gauge number 27 applications. Right-hand spiral fluting clears chips efficiently, and the web-thinned, tapered web design reduces thrust requirements at the cutting edge. Licensed HVAC technicians, machinists, and trade professionals installing equipment use this type of bit for precision clearance and pilot holes.

The C70160 is suited for drilling aluminum and similarly rated workpiece materials in light to heavy-duty production settings. Its straight-cylindrical shank fits standard drill chucks without adapters, making it compatible with benchtop drill presses, hand drills, and CNC equipment. The 1-7/8-inch flute length provides adequate chip clearance for the depths typical of jobber-length applications. This bit meets NAS 907 Type J standards, making it appropriate for aerospace-adjacent and precision trade work where dimensional tolerances matter.

Key Features

• M42 cobalt steel construction for heat and wear resistance in metal drilling
• 135-degree split point reduces walking and lowers required feed pressure
• Gold oxide coating provides lubricity and surface protection during cutting
• Web-thinned, tapered web design reduces thrust load at the tip
• Right-hand spiral flute with regular spiral type for consistent chip evacuation
• Meets NAS 907 Type J specification for precision and aerospace-adjacent applications

Compatibility

Designed as a jobber-length drill bit for wire gauge number 27 applications; fits any standard drill chuck accepting a 0.1440-inch straight-cylindrical shank. Rated for aluminum as the primary workpiece material per manufacturer specification.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with proper drilling technique for cobalt-grade tooling. Secure the workpiece fully before drilling and confirm chuck is tightened to prevent bit slippage. Use appropriate cutting fluid or lubricant when drilling metal to extend bit life and maintain dimensional accuracy. Do not exceed the rated cutting speed range for cobalt bits in the applicable workpiece material.