Accupro A-6120031R Micro Drill Bit 0.0122 in Solid Carbide

Product Description

The ACCUPRO A-6120031R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. Built in the Miniature Series, this bit measures 0.0122 inches in diameter with a 120-degree drill point angle and a 25.00 mm overall length. The bright, uncoated finish maintains dimensional accuracy at the cutting edge. The straight-cylindrical shank measures 1.00 mm in diameter, making it compatible with standard precision chucks and collets. Right-hand cutting direction and a regular spiral flute geometry support consistent chip evacuation in small-diameter holes. Licensed tradespeople and precision machinists working in electronics, medical device, or instrument manufacturing are the primary users of this bit.

This micro drill bit is suited for applications requiring very small diameter holes in hard or dense materials such as metals and composites. The solid carbide construction handles materials that would quickly wear high-speed steel tooling. With a 1.60 mm flute length and 25.00 mm overall length, the bit is sized for shallow, precise bores typical in printed circuit board drilling, watchmaking, and small instrument fabrication. It ships individually but carries a minimum order quantity of 10 units, making it practical for shop stocking at the bench level.

Key Features

• 0.0122-inch cutting diameter for high-precision micro drilling
• Solid carbide construction resists wear in hard and abrasive materials
• 120-degree drill point angle for accurate entry and reduced walking
• Bright, uncoated finish preserves close dimensional tolerances
• Regular spiral flute type supports efficient chip removal in small-diameter bores
• Straight-cylindrical shank fits standard precision collets and micro chucks

Compatibility

Designed as a standard miniature series micro drill bit with a 1.00 mm straight-cylindrical shank, suitable for use in precision drill presses, CNC machining centers, and hand-held precision drilling equipment accepting this shank size.

Installation Notes

Micro drill bits of this diameter require a precision collet or micro chuck rated for the 1.00 mm shank to prevent runout and bit breakage. Always ensure the spindle and workpiece are properly secured before operation, as lateral forces on bits at this diameter are a primary cause of breakage. Cutting speeds and feed rates should be set conservatively and referenced against the material being drilled. No coolant-through feature is present on this bit, so air blast or light external lubrication may be applied as appropriate for the material.