Harvey Tool 20332 Micro Drill Bit 0.05 in Solid Carbide

Product Description

The HARVEY TOOL 20332 is a solid carbide micro drill bit designed for precision drilling in miniature applications. With a 0.05-inch cutting diameter and a 130-degree point angle, this bit delivers accurate, centered entry and clean hole geometry in tight-tolerance work. The spiral flute design promotes efficient chip evacuation during the cut. A bright, uncoated finish preserves the carbide substrate without added coating thickness, which is critical at this diameter scale. Right-hand cut geometry makes it compatible with standard spindle rotation. Machinists, toolmakers, and precision fabricators use this bit for microdrilling in metals, composites, and engineering plastics where standard-size tooling cannot reach.

This bit belongs to the Harvey Tool Miniature Drills series, suited for CNC machining centers, drill presses, and manual mills operating at high RPM with appropriate feed rates for the 0.05-inch diameter. It is a fit for jobs requiring small-diameter through-holes or pilot holes in production and prototype environments. The 1/8-inch shank diameter allows direct installation into standard collets and chucks commonly found in machine shop setups without requiring specialty toolholders.

Key Features

• 0.05-inch cutting diameter for precision microdrilling applications
• 130-degree point angle for accurate hole entry and reduced walking
• Solid carbide construction for rigidity and wear resistance at small diameters
• Spiral flute geometry promotes chip clearing in deep or blind holes
• Bright, uncoated finish maintains true diameter tolerances without coating buildup
• Right-hand cut compatible with standard spindle direction

Compatibility

Designed as a miniature drill bit with a 1/8-inch shank diameter, compatible with standard collets and drill chucks accepting that shank size on CNC machining centers, knee mills, and drill presses.

Installation Notes

Installation and use should be performed by qualified machinists familiar with micro-diameter tooling and appropriate spindle speeds for carbide. Power down and de-energize the machine before installing or removing the bit. At 0.05-inch diameter, carbide is highly brittle — avoid side loading, interrupted cuts, or excessive feed rates that can cause bit fracture. Follow the machine tool manufacturer and tooling guidelines for RPM, feed rate, and coolant application appropriate for this diameter and workpiece material.