Harvey Tool 20250 Micro Drill Bit 1/32 in Solid Carbide

Product Description

The HARVEY TOOL 20250 is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. Measuring 1/32 inch (0.0312 inches) in diameter with an overall length of 1.5 inches, this bit features a 130-degree split point angle that reduces walking and improves entry accuracy. The spiral flute geometry promotes efficient chip evacuation during drilling. Right-hand cut direction is standard for use with conventional drill presses, CNC machines, and handheld drilling equipment. The bright, uncoated finish makes it well suited for non-ferrous metals, plastics, composites, and other materials where coating buildup could be a concern. Machinists, toolmakers, and precision fabricators are the primary users of this bit.

This micro drill bit is intended for applications where small-diameter hole accuracy is critical. Typical uses include PCB drilling, instrument component manufacturing, watchmaking, jewelry fabrication, and fine metalwork. The 1/8-inch shank diameter allows it to seat securely in standard collet chucks and drill chuck systems commonly found in benchtop and CNC drilling setups. The 0.395-inch flute length provides adequate chip clearance for shallow-to-moderate depth holes at this diameter. This bit is sold individually and is appropriate for both production shop environments and single-piece precision work.

Key Features

• Solid carbide construction for rigidity and wear resistance at micro diameters
• 130-degree point angle reduces drill walk and improves hole entry accuracy
• Spiral flute design promotes chip evacuation during drilling
• Bright uncoated finish suitable for non-ferrous metals, plastics, and composites
• Right-hand cut for use with standard drilling equipment and CNC machines
• 1/8-inch shank diameter fits standard collet and drill chuck systems

Compatibility

Designed for use in CNC drilling machines, drill presses, and precision handheld equipment equipped with collet or drill chucks accepting a 1/8-inch shank diameter.

Installation Notes

Installation and use of this bit should be performed by machinists or trained fabricators familiar with micro-diameter tooling. Ensure the spindle and workpiece are fully secured before starting the machine. Micro drill bits are brittle at small diameters — avoid lateral loading, excessive feed pressure, or unsupported workpiece movement, as these conditions commonly cause breakage. Always verify spindle runout is within tolerance before running micro-diameter tooling.