Accupro A-6120272R Micro Drill Bit 2.72 Mm Solid Carbide

Product Description

The ACCUPRO A-6120272R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. It measures 2.72 mm in diameter with an overall length of 38 mm and features a 120-degree point angle for accurate self-centering entry. The straight-cylindrical shank measures 3.00 mm in diameter, making it compatible with standard collet chucks and drill press setups. The bright, uncoated finish leaves the carbide substrate exposed for direct heat dissipation. This bit is part of the Miniature series and is intended for use by machinists, toolmakers, and precision fabricators working with small-diameter hole requirements.

This micro drill bit is suited for drilling small-diameter holes in metals, plastics, composites, and other materials where tight tolerances and clean entry points are required. The spiral flute geometry promotes chip evacuation during through-hole and blind-hole operations. With a flute length of 14 mm, it handles moderate-depth passes without excessive deflection. Applications include PCB work, instrument manufacturing, mold and die work, and precision component fabrication in both shop and production environments.

Key Features

• 2.72 mm drill diameter (0.1071 inches) for precise small-hole drilling
• Solid carbide construction for hardness and wear resistance in demanding materials
• 120-degree point angle for accurate self-centering and reduced walking
• Spiral flute design promotes efficient chip evacuation
• Bright, uncoated finish with no coating buildup to affect tolerances
• Straight-cylindrical shank compatible with standard collet and chuck systems

Compatibility

Designed as a miniature-series replacement or stock drill bit for use in standard collet chucks, pin vises, and drill presses that accept a 3.00 mm straight-cylindrical shank.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or toolroom personnel familiar with small-diameter cutting tools. Secure the shank fully in a collet or chuck before operation and verify runout is within acceptable limits before drilling. Use appropriate spindle speeds and feed rates for the material being drilled, as micro-diameter carbide bits are brittle and susceptible to breakage under side-load or excessive feed pressure. Do not use this bit as a reamer or apply lateral force during the drilling cycle.