Cleveland C70162 Jobber Drill Bit 29 Cobalt 135 Degree

Product Description

The CLEVELAND C70162 is a wire gauge size 29 jobber length drill bit designed for precision drilling in metal and light alloy applications. Built from M42 cobalt high-speed steel, it delivers extended cutting life in demanding materials including aluminum and other non-ferrous metals. The 135-degree split point reduces walking at startup and requires no center punch on most surfaces. A gold oxide coating provides additional lubricity and surface hardness. Overall length is 2-7/8 inches with a flute length of 1.75 inches. This bit is installed and used by machinists, maintenance technicians, and HVAC or plumbing trades when drilling through structural metal components.

The C70162 is suited for general-purpose production and maintenance drilling where a right-hand spiral flute and straight cylindrical shank are required. The 0.1360-inch decimal diameter fits standard drill chucks without an adapter. Its web-thinned, tapered web construction reduces thrust load during cutting. Primary workpiece material is aluminum, though cobalt M42 construction handles a range of ferrous and non-ferrous metals. This bit meets NAS 907 Type J standards, making it appropriate for aerospace-adjacent maintenance and fabrication work.

Key Features

• M42 cobalt steel construction for heavy-duty, extended-life drilling
• 135-degree split point with web thinning reduces thrust and eliminates walking
• Gold oxide coating improves lubricity and chip evacuation
• Right-hand, regular spiral flute optimized for aluminum and non-ferrous metals
• Straight cylindrical shank fits standard 3-jaw drill chucks
• Meets NAS 907 Type J specification for quality-controlled manufacturing environments

Compatibility

Designed as a direct-fit jobber length drill bit for any standard drill chuck accepting a 0.1360-inch straight cylindrical shank. Compatible with benchtop drill presses, handheld electric drills, and CNC drilling operations requiring wire gauge size 29 tooling.

Installation Notes

This bit is installed by machinists, HVAC technicians, electricians, and plumbers during metal fabrication or field drilling operations. Secure the straight shank firmly in a properly sized chuck before operation and verify chuck key is removed before powering the tool. Use appropriate cutting fluid when drilling ferrous materials to preserve bit life and maintain diameter tolerance. Inspect the cutting edge before each use and replace bits showing chipping or heat discoloration to maintain hole quality.