Accupro A-6100033R Micro Drill Bit Size 81 Solid Carbide

Product Description

The ACCUPRO A-6100033R is a size 81 micro drill bit engineered for precision drilling in tight-tolerance applications. Manufactured from solid carbide, this bit delivers the rigidity and wear resistance needed when working with hard or abrasive materials at small diameters. The 120-degree point angle provides a standard cutting geometry suited for a wide range of materials. At 0.0130 inches in diameter and 25 millimeters overall length, it is built for miniature-series work where dimensional accuracy is critical. Machinists and tool room technicians who require consistent performance at sub-0.015-inch diameters will find this bit purpose-built for that work.

This micro drill bit is used in precision machining environments including CNC machining centers, drill presses, and manual milling setups where small-diameter hole production is required. Typical applications include printed circuit board drilling, watch and instrument components, medical device parts, and fine metalwork. The solid carbide construction and spiral flute design make it appropriate for both ferrous and non-ferrous materials where chip evacuation and hole quality are priorities.

Key Features

• Solid carbide construction for maximum rigidity and wear resistance at small diameters
• Size 81 wire gauge diameter — 0.0130 inches decimal equivalent
• 120-degree standard point angle for general-purpose cutting geometry
• Spiral flute design promotes efficient chip evacuation
• Bright/uncoated finish — no coating buildup to affect critical hole tolerances
• Straight-cylindrical shank, 1.00 millimeter diameter, for broad collet compatibility
• Right-hand cut for use with standard clockwise-rotating spindles

Compatibility

Designed as an OEM-style miniature-series replacement drill bit compatible with straight-cylindrical collet systems and chucks accepting a 1.00 millimeter shank diameter.

Installation Notes

Installation of micro drill bits should be performed by qualified machinists or tool room personnel familiar with small-diameter tooling. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing the bit from the collet or chuck. Use a properly sized collet to avoid runout, which is especially critical at diameters below 0.020 inches. Do not exceed manufacturer-recommended spindle speeds for the workpiece material and bit diameter, as solid carbide micro bits are brittle and susceptible to breakage under lateral load or excessive feed rates.