Harvey Tool CSG0468-C6 Micro Drill Bit 3/64 in Carbide

Product Description

The HARVEY TOOL CSG0468-C6 is a solid carbide micro drill bit engineered for precision drilling in hardened steel applications. It features a 3/64 inch (0.0469 inch decimal) diameter with a 140-degree split point and an AlTiN Nano coating that extends tool life under high-heat cutting conditions. The spiral flute geometry promotes efficient chip evacuation in deep, tight-tolerance holes. Part of the Miniature High Performance Drills series for hardened steels, this bit is sized for applications where standard drill geometry cannot maintain the required precision. It is sized to an h6 diameter tolerance for close-fit accuracy.

This bit is designed for use in hardened steel workpieces in precision machining environments. The 140-degree point angle reduces thrust force at entry and improves centering on hard substrates. With a 3.00 mm shank diameter and 50 mm overall length, it fits standard collet-style toolholding systems on CNC machining centers, drill presses, and precision hand tools. Typical users include machinists, toolroom technicians, and precision manufacturing shops working with hardened steel components where micro-diameter drilling is required.

Key Features

• Solid carbide construction for rigidity and wear resistance in hardened steel
• AlTiN Nano coating reduces friction and extends tool life at elevated cutting temperatures
• 140-degree point angle minimizes walking and reduces entry thrust on hard materials
• Spiral flute design promotes chip evacuation in micro-diameter holes
• h6 diameter tolerance ensures close-fit precision for tight-clearance applications
• Right-hand cut for use with standard spindle rotation

Compatibility

Designed for drilling hardened steel workpieces. Part of the HARVEY TOOL Miniature High Performance Drills series for hardened steels. Compatible with standard collet toolholding systems accepting a 3.00 mm shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists familiar with micro-diameter carbide tooling. Secure the shank in a precision collet or drill chuck rated for the shank diameter before use. Carbide tooling is brittle — avoid lateral loading, side pressure, or using the bit as a pry. Always verify spindle runout is within acceptable limits before drilling, as excessive runout accelerates breakage in micro-diameter sizes.