Harvey Tool 20300 Micro Drill Bit Wire 59 Solid Carbide

Product Description

The HARVEY TOOL 20300 is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. It carries a wire size designation of 59, corresponding to a decimal diameter of 0.041 inches, and features a 130-degree split point angle that promotes accurate entry and reduces walking on initiation. The spiral flute geometry supports chip evacuation in shallow and moderate-depth holes. At 1.5 inches overall length with a 1/8-inch shank diameter and a flute length of 0.395 inches, this drill is built for use in CNC machining centers, drill presses, and precision hand-held fixtures where miniature hole diameters are required.

This bit is suited for machining operations that demand consistent, repeatable small-diameter holes in materials where carbide hardness and rigidity outperform high-speed steel alternatives. The bright uncoated finish makes it appropriate for a range of ferrous and non-ferrous materials where a coating is not specified by the application. It is sold individually and is part of the HARVEY TOOL Miniature Drills series, targeting machinists, toolroom technicians, and precision fabrication shops working on components with fine-feature drilling requirements.

Key Features

• Wire size 59 at 0.041 inches decimal diameter for consistent bore sizing
• 130-degree drill point angle reduces walking and improves entry accuracy
• Solid carbide construction provides rigidity and wear resistance in miniature drilling applications
• Spiral flute design assists chip evacuation during drilling cycles
• Right-hand cutting direction compatible with standard spindle rotation
• 1/8-inch shank diameter fits common collets and drill chucks
• Bright uncoated finish suitable for general-purpose miniature drilling

Compatibility

Designed as an OEM-style replacement and standard tooling option for miniature drilling applications requiring a wire size 59 solid carbide drill bit with a 1/8-inch shank diameter.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or toolroom technicians familiar with CNC or manual drilling equipment. Secure the 1/8-inch shank in a properly sized collet or drill chuck, ensuring concentricity before running the spindle. Power down or de-energize the machine and verify the spindle is fully stopped before changing tooling. Avoid side-loading or flexing the bit during operation, as the small diameter is susceptible to breakage under lateral force.