Harvey Tool DQW0180-C8 Micro Drill Bit No. 77 0.0180 in

Product Description

The HARVEY TOOL DQW0180-C8 is a solid carbide micro drill bit designed for high-performance drilling in aluminum alloys. It carries a No. 77 wire gauge designation with a decimal diameter of 0.0180 inches and features a 130-degree drill point angle optimized for entry and chip control in non-ferrous materials. A Titanium Diboride (TiB2) coating reduces built-up edge and improves lubricity when cutting aluminum. The overall length is 50.00 mm with a 6.20 mm spiral flute length, and the shank diameter is 3.00 mm. This bit is intended for machinists and CNC operators working with precision micro-drilling applications.

This drill bit is engineered for use in aluminum alloy workpieces in both primary and secondary machining operations. It fits into the HARVEY TOOL Miniature High Performance Drills series for aluminum alloys, making it appropriate for tight-tolerance work in aerospace, electronics, and precision manufacturing environments where micro-hole diameters and diameter tolerance control are critical. The h6 diameter tolerance on the drill diameter supports close-fit and reamed-hole applications.

Key Features

• No. 77 wire gauge diameter of 0.0180 inches with h6 tolerance for tight dimensional control
• 130-degree drill point angle promotes clean entry and reduces thrust in aluminum alloys
• Titanium Diboride coating minimizes built-up edge and extends tool life in non-ferrous cutting
• Solid carbide construction provides rigidity and wear resistance at micro diameters
• Right-hand cutting direction with spiral flute geometry for efficient chip evacuation
• 3.00 mm shank diameter compatible with standard micro-drill collet systems

Compatibility

Designed for drilling aluminum alloy workpieces as part of the HARVEY TOOL Miniature High Performance Drills series for Aluminum Alloys. Verify collet or chuck acceptance of the 3.00 mm shank before installation.

Installation Notes

Installation and operation should be performed by qualified machinists or CNC programmers familiar with micro-drill tooling. Ensure the spindle and workholding are completely stopped and locked before tool changes. Use an appropriate collet sized to the 3.00 mm shank diameter and confirm runout is within acceptable limits before drilling, as excessive runout significantly increases breakage risk at this diameter. Follow machine tool manufacturer guidelines for spindle speeds and feed rates when working with carbide micro drills in aluminum.