Accupro A-6120027R Micro Drill Bit Size 86 Solid Carbide

Product Description

The ACCUPRO A-6120027R is a micro drill bit designed for precision drilling in tight-tolerance applications. Built from solid carbide, it holds a wire gauge size of 86, corresponding to a decimal diameter of 0.0106 inches. The 120-degree point angle and spiral flute geometry support clean entry and efficient chip evacuation in small-diameter work. With an overall length of 25 millimeters and a straight-cylindrical shank measuring 1.00 millimeter in diameter, this bit fits standard precision chucks and collet holders used in micro-drilling setups. It is intended for machinists, tool-and-die makers, and precision fabricators who require consistent performance at sub-half-millimeter diameters.

This drill bit is suited for use in CNC machining centers, drill presses, and manual precision drilling equipment where extremely small hole diameters are required. The bright, uncoated finish makes it appropriate for a range of materials where coating buildup could compromise dimensional accuracy. The right-hand cutting direction is standard for conventional spindle rotation. It is commonly used in electronics manufacturing, medical device fabrication, instrument manufacturing, and aerospace component work where micro-hole tolerances are critical. The miniature series designation confirms this bit is engineered specifically for small-diameter, high-precision drilling tasks.

Key Features

• Solid carbide construction for rigidity and wear resistance at micro diameters
• Wire gauge size 86, equivalent to 0.0106 inches decimal diameter
• 120-degree point angle for controlled entry in precision applications
• Spiral flute design promotes chip evacuation in small-diameter holes
• Straight-cylindrical shank at 1.00 millimeter diameter for secure chuck engagement
• Bright, uncoated finish suitable for dry cutting and coating-sensitive materials

Compatibility

Designed as an OEM-style replacement or standard supply bit for precision drilling equipment accepting a 1.00 millimeter straight-cylindrical shank in micro and miniature drill series applications.

Installation Notes

Installation and use of micro drill bits at this diameter should be performed by qualified machinists familiar with micro-drilling techniques. Secure the shank fully in a precision collet or chuck rated for the shank diameter before operating. Power down and lock out the spindle before changing bits. At sub-0.020-inch diameters, feed rate and spindle speed must be carefully managed to avoid bit deflection or breakage; refer to the machine manufacturer and carbide tooling guidelines for recommended parameters.