Accupro A-6100064R Micro Drill Bit 0.0252 in Solid Carbide

Product Description

The ACCUPRO A-6100064R is a solid carbide micro drill bit designed for precision drilling applications requiring extremely small hole diameters. With a cutting diameter of 0.0252 inches and a 120-degree drill point angle, this bit delivers accurate, repeatable results in tight-tolerance work. The bright/uncoated solid carbide construction provides rigidity and wear resistance suited to drilling hard materials at high RPM. Overall length is 30.00 mm with a 5.00 mm flute length and a 1.50 mm straight-cylindrical shank. The right-hand spiral flute geometry promotes efficient chip evacuation in miniature drilling operations. This bit is installed and used by machinists, tool-and-die makers, and precision fabrication technicians.

This micro drill bit is suited for applications in printed circuit board (PCB) fabrication, watchmaking, instrument manufacturing, medical device production, and other industries where sub-millimeter hole accuracy is required. The miniature series designation indicates compatibility with high-speed spindles and precision drill presses that accept 1.50 mm straight-cylindrical shanks. No coolant-through capability means this bit is intended for use with external coolant or dry drilling at appropriate feed and speed parameters for the workpiece material.

Key Features

• Solid carbide construction for rigidity and extended tool life in hard materials
• 0.0252 inch cutting diameter for precision micro-hole drilling
• 120-degree drill point angle with standard point type for accurate entry
• Bright/uncoated finish — no coating buildup, suitable for non-ferrous and ferrous materials
• Regular spiral, right-hand cut with straight-cylindrical shank for standard collet and chuck compatibility
• 5.00 mm flute length supports chip clearance in shallow micro-drilling applications

Compatibility

Designed for use in precision drilling equipment accepting a 1.50 mm straight-cylindrical shank, consistent with standard miniature-series drill bit fitment in high-speed drill presses, CNC machining centers, and bench-top micro-drilling stations.

Installation Notes

Installation and use of micro drill bits should be performed by qualified machinists or precision fabrication technicians familiar with high-speed drilling equipment. Ensure the spindle and collet are clean and free of debris before seating the shank to prevent runout. At this diameter, excessive feed pressure or improper RPM selection is the primary cause of bit breakage — consult the toolmaker's recommended surface footage for the workpiece material. Eye protection and appropriate machine guarding are required during operation.