Harvey Tool CSG0670-C6 Micro Drill Bit 0.0670 in Wire 51

Product Description

The HARVEY TOOL CSG0670-C6 is a solid carbide micro drill bit designed for precision drilling in hardened steel and other difficult-to-machine materials. It carries a wire gauge size of 51, corresponding to a decimal diameter of 0.0670 inches, and features a 140-degree drill point angle optimized for flat-bottomed entry and reduced walking on hard surfaces. The AlTiN Nano coating adds heat resistance and surface hardness, extending tool life in demanding cutting conditions. With a right-hand cutting direction and spiral flute geometry, this bit is part of Harvey Tool's Miniature High Performance Drills series built specifically for hardened steel applications.

This micro drill bit is intended for use on hardened steel workpieces in precision machining environments, including tool and die, mold making, aerospace component work, and medical device manufacturing. Its compact overall length of 50.00 mm and 3.00 mm shank diameter make it compatible with standard collet systems used on CNC machining centers and high-speed spindles. The h6 diameter tolerance on the drill body supports accurate, repeatable hole sizing in tight-tolerance work.

Key Features

• Solid carbide construction for rigidity and wear resistance in hardened steel
• AlTiN Nano coating for elevated heat resistance and extended tool life
• 140-degree drill point angle reduces thrust and improves entry accuracy
• Right-hand spiral flute geometry for efficient chip evacuation
• h6 diameter tolerance for tight, consistent hole sizing
• 3.00 mm shank diameter suits standard collet toolholding systems

Compatibility

Designed for drilling hardened steel as both primary and secondary workpiece material. Part of the Harvey Tool Miniature High Performance Drills series for hardened steels. Fits toolholders accepting a 3.00 mm shank diameter.

Installation Notes

This bit is installed and operated by machinists on CNC machining centers or manual high-speed spindles using a collet or drill chuck sized for a 3.00 mm shank. Always verify spindle runout is within acceptable limits before running micro-diameter tooling, as excessive runout accelerates breakage. Power down the spindle completely before changing tooling. Follow machine manufacturer guidelines and applicable shop safety standards when handling carbide cutting tools.