Harvey Tool ARY1093-C6 Micro Drill Bit 7/64 Inch Solid Carbide

Product Description

The HARVEY TOOL ARY1093-C6 is a solid carbide micro drill bit engineered for precision drilling in hardened steel applications. It features a 7/64 inch (0.1094 inch) diameter with a 140-degree drill point angle and an AlTiN Nano coating designed to withstand the elevated heat and abrasion generated when cutting hardened materials. The overall length is 63.00 mm with a 27.00 mm flute length, keeping the tool rigid and minimizing deflection in tight-tolerance work. A right-hand spiral flute geometry promotes efficient chip evacuation. This bit is part of the Miniature High Performance Drills - Hardened Steels series and is intended for use by machinists and tool-and-die professionals operating CNC machining centers or precision drill presses.

This drill bit is suited for production and job-shop environments where hardened steel workpieces require small-diameter, high-accuracy through-holes or blind holes. The h6 shank diameter tolerance ensures consistent, repeatable tool holding in collet-style or precision drill chucks. The AlTiN Nano coating extends tool life in high-hardness materials, reducing the frequency of tool changes during runs. Typical applications include mold and die work, aerospace component drilling, and precision fixture fabrication where standard HSS or uncoated carbide tooling falls short in hardened steel.

Key Features

• Solid carbide construction for rigidity and wear resistance in hardened steel
• AlTiN Nano coating reduces heat buildup and extends tool life in abrasive materials
• 140-degree drill point angle optimized for entry accuracy in hard workpieces
• Right-hand spiral flute promotes effective chip evacuation
• h6 diameter tolerance on shank ensures precise, repeatable tool holding
• 4.00 mm shank diameter compatible with standard collet and chuck systems

Compatibility

Designed for use in hardened steel and belongs to the Miniature High Performance Drills - Hardened Steels series. The 4.00 mm shank is compatible with standard collet chucks and precision drill chuck systems accepting that shank size.

Installation Notes

Installation and use should be performed by a qualified machinist familiar with carbide tooling and CNC or manual precision drilling equipment. Ensure the machine spindle and chuck are powered off and secured before tool changes. Carbide tooling is brittle — avoid side loading, interrupted cuts without proper feed rate adjustment, and dropping the bit, as chipping or fracture can occur. Follow the machine manufacturer and tooling series recommendations for feed rate and spindle speed when drilling hardened materials.