Accupro A-6100013R Micro Drill Bit 0.0051 in Solid Carbide

Product Description

The ACCUPRO A-6100013R is a solid carbide micro drill bit designed for precision drilling in miniature applications. With a 0.0051-inch diameter and a 120-degree drill point angle, this bit is built for extremely tight-tolerance hole making where standard bits cannot perform. The bright/uncoated finish maintains the natural carbide surface, suitable for a range of base materials. A spiral flute with regular spiral geometry clears chips efficiently at small diameters. The straight-cylindrical shank seats securely in compatible micro drill chucks. Machinists, toolmakers, and precision fabricators working on printed circuit boards, watchmaking components, medical device parts, or similar fine-detail work rely on this class of tooling.

This micro drill bit fits applications demanding sub-0.010-inch hole diameters in controlled drilling environments, including CNC micro-machining centers, precision drill presses, and high-speed spindle setups. The 25.00 mm overall length and 1.00 mm shank diameter are standard for miniature series tooling. Right-hand cutting direction matches conventional spindle rotation. Coolant-through capability is not available on this bit, so external coolant or mist lubrication is the appropriate method when the material or feed rate demands it.

Key Features

• 0.0051-inch diameter for sub-millimeter precision hole making
• Solid carbide construction for rigidity and wear resistance at micro scales
• 120-degree standard point angle suited to a wide range of materials
• Spiral flute with regular helix for reliable chip evacuation at small diameters
• Bright/uncoated finish preserves sharp cutting edge geometry
• Straight-cylindrical shank at 1.00 mm diameter for compatibility with standard micro drill chucks

Compatibility

Designed for use with micro drill chucks and collet systems that accept a 1.00 mm straight-cylindrical shank, typical in CNC micro-machining centers and precision benchtop drill presses used in miniature tooling applications.

Installation Notes

Installation should be performed by a machinist or tooling technician familiar with micro-diameter drill bit handling. Secure the shank fully into the chuck or collet before operation and verify runout with a dial indicator where tolerances are critical. At 0.0051-inch diameter, these bits are extremely fragile — avoid side loading, aggressive feed rates, or hand-feeding without controlled depth stops. Power down the spindle completely before changing tooling.