Harvey Tool 20350 Micro Drill Bit No. 54 Solid Carbide

Product Description

The HARVEY TOOL 20350 is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. Built to a No. 54 wire gauge size, it produces a 0.0550-inch diameter hole with a 130-degree split-style point that promotes accurate entry and reduces walking on hard or brittle materials. The spiral flute geometry evacuates chips efficiently during drilling. At 1.5000 inches overall length with a 1/8-inch shank diameter and a 0.4130-inch flute length, this bit is sized for use in micro-machining centers, CNC mills, benchtop drill presses, and precision hand tools. The bright, uncoated finish is suitable for a wide range of base materials without adding dimensional variance from a coating layer.

This drill bit is intended for precision trades and machining environments where small-diameter hole quality matters. Typical applications include PCB drilling, instrument manufacturing, watch repair tooling, medical device fabrication, and fine metalwork. Right-hand cut geometry makes it compatible with standard spindle rotation on conventional drilling equipment. The miniature form factor suits production runs or prototype work requiring consistent, repeatable micro holes in metal, plastic, or composite substrates.

Key Features

• No. 54 wire gauge size producing a 0.0550-inch diameter hole
• 130-degree point angle for accurate entry and reduced bit walk
• Solid carbide construction for rigidity and wear resistance in hard materials
• Spiral flute design promotes chip evacuation in deep micro holes
• Bright, uncoated finish maintains true diameter without coating buildup
• 1/8-inch shank diameter fits standard collets and drill chucks on precision equipment

Compatibility

Designed as an OEM-style replacement and standard production micro drill bit compatible with CNC machining centers, benchtop drill presses, and precision hand tools accepting a 1/8-inch shank diameter.

Installation Notes

Installation and use of this drill bit should be performed by machinists or trade professionals familiar with micro-drilling procedures. Ensure the machine spindle is fully stopped and the collet or chuck is properly cleaned before seating the 1/8-inch shank. Micro carbide tooling is brittle and should not be used at feed rates or spindle runout levels appropriate for larger steel twist drills. Follow equipment manufacturer guidelines for speed and feed selection when working with carbide at this diameter range.