Harvey Tool 20430-C3 Micro Drill Bit Size 43 Solid Carbide

Product Description

The HARVEY TOOL 20430-C3 is a solid carbide micro drill bit designed for precise small-diameter drilling in demanding machining applications. Built to a wire gauge size of 43 with a decimal diameter of 0.0890 inches, this bit features a 130-degree drill point angle that promotes accurate entry and reduces walking on hard or thin workpieces. The AlTiN coating adds heat resistance and extends tool life when cutting ferrous and hard alloy materials at elevated speeds. At 1.5000 inches overall length with a 0.4130-inch spiral flute, it is sized for use in CNC machining centers, drill presses, and precision hand-piece setups where tight tolerances are required.

This micro drill is suited for machinists, toolmakers, and precision fabricators working in industries such as medical device manufacturing, electronics, aerospace, and mold making. The right-hand cut spiral flute geometry promotes chip evacuation in blind and through-hole drilling on materials including stainless steel, hardened steels, titanium, and high-temperature alloys. The 1/8-inch shank diameter allows direct mounting in standard collets and chucks commonly found in benchtop and production machining equipment.

Key Features

• Wire gauge size 43 with 0.0890-inch decimal diameter for precise small-hole work
• 130-degree drill point angle reduces walking and improves entry accuracy
• AlTiN coating provides heat resistance and extended tool life on hard materials
• Solid carbide construction delivers rigidity and wear resistance at high spindle speeds
• Right-hand cut spiral flute promotes efficient chip evacuation in through and blind holes
• 1/8-inch shank fits standard collets and chucks without adapters

Compatibility

Designed as a miniature series replacement drill bit compatible with standard 1/8-inch collets and drill chucks used in CNC machining centers, drill presses, and precision rotary hand pieces.

Installation Notes

Installation and use of this micro drill bit should be performed by qualified machinists familiar with small-diameter tooling. Ensure the spindle and workpiece are fully secured before engaging the tool, and verify collet runout is within acceptable tolerance to prevent bit deflection or breakage at this diameter. Use cutting fluid or air blast appropriate to the workpiece material to manage heat and chip load. Do not exceed the tool manufacturer's recommended feed and speed parameters for the workpiece material and bit diameter.