Cleveland C70185 Cobalt Drill Bit Wire 52 0.0635 in

Product Description

The CLEVELAND C70185 is a cobalt jobber-length drill bit sized to wire gauge 52, with a decimal diameter of 0.0635 inches and an overall length of 1-7/8 inches. Built from M42 cobalt high-speed steel, it carries a gold oxide coating that improves heat resistance and extends tool life in demanding applications. The 135-degree split point geometry reduces walking on entry and lowers thrust force compared to a conventional 118-degree point. Web-thinning at the tip further reduces cutting resistance. This bit is intended for use by machinists, maintenance technicians, and trade professionals working with small-diameter precision holes.

This drill bit is rated for primary use in aluminum and is suited for light-gauge sheet metal, instrumentation panels, electrical enclosures, and other precision drilling tasks where a wire-gauge size is specified. The straight-cylindrical shank accepts standard drill chucks across benchtop drill presses, hand drills, and CNC drilling setups. The regular spiral flute promotes chip evacuation in shallow-to-moderate depth holes. It meets NAS 907 Type J specification, making it appropriate for aerospace-adjacent maintenance and production environments.

Key Features

• M42 cobalt steel construction for elevated heat and wear resistance
• Gold oxide coating reduces friction and extends service intervals
• 135-degree split point with web-thinned, tapered web for low-thrust entry
• Right-hand cut, regular spiral flute, 2-flute configuration
• Meets NAS 907 Type J specification
• Straight-cylindrical shank, 0.0635-inch diameter, compatible with standard chucks

Compatibility

Designed as an OEM-style replacement or production-grade option for applications requiring a wire-gauge 52 (0.0635-inch) jobber-length drill bit with a straight-cylindrical shank. Primary workpiece material is aluminum; the NAS 907 Type J rating also supports use in other non-ferrous and light ferrous materials within the heavy-duty wire-gauge drill bit category.

Installation Notes

Install in a properly rated drill chuck, confirming shank is fully seated and chuck jaws are tightened before operation. Disconnect power or lock out the drilling machine before changing bits. Use appropriate cutting fluid or lubricant when drilling aluminum or other non-ferrous materials to preserve coating and edge life. This bit does not support coolant-through delivery; external lubrication is required for best results.