Accupro A-6120101R Micro Drill Bit 1.01mm Solid Carbide

Product Description

The ACCUPRO A-6120101R is a solid carbide micro drill bit designed for precision drilling in tight tolerances. It measures 1.01 mm (0.0398 inches) in diameter and belongs to the Miniature series, making it suitable for fine-detail work in hard materials where standard high-speed steel bits are not adequate. The 120-degree drill point angle and right-hand cutting direction are standard for general-purpose miniature drilling. The bit ships bright and uncoated, meaning no coating has been applied that could affect dimensional accuracy in ultra-fine bore applications. Licensed machinists, tool-and-die makers, and precision fabricators are the typical end users for this style of drill.

This micro drill bit is built for applications requiring very small bore diameters in metals, composites, and similar hard substrates. The straight-cylindrical shank allows it to seat in standard collet chucks and pin vises used on CNC machines, drill presses, and manual precision drilling stations. Its 30.00 mm overall length and 4.80 mm flute length suit shallow-hole drilling tasks in circuit board manufacturing, instrument assembly, mold-making, and similar precision industries where hole placement and size accuracy are critical.

Key Features

• Solid carbide construction provides rigidity and wear resistance in hard materials
• 1.01 mm drill diameter equivalent to wire gauge size 60 (0.0398 inches)
• 120-degree standard point angle for general-purpose miniature drilling
• Spiral flute with right-hand cutting direction for conventional chip evacuation
• Bright/uncoated finish preserves true dimensional tolerance at the cutting edge
• Straight-cylindrical shank seats in standard collet chucks and pin vises

Compatibility

Designed for use in CNC machining centers, drill presses, and precision hand-drilling stations equipped with collet chucks or pin vises accepting a 1.50 mm straight-cylindrical shank.

Installation Notes

Micro drill bits at this diameter are fragile and require a rigid, well-centered setup to avoid breakage. Always ensure the workpiece is securely clamped and the spindle is properly trammed before drilling. Use appropriate cutting speeds for carbide tooling in the material being drilled and apply cutting fluid where the material and application permit. Handle with care during tool changes, as solid carbide is brittle and can chip if dropped or impacted.