Accupro A-6120285R Micro Drill Bit 2.85 Mm Solid Carbide

Product Description

The ACCUPRO A-6120285R is a solid carbide micro drill bit designed for precision drilling in small-diameter applications. With a 2.85 mm (0.1122 inch) cutting diameter and a 120-degree point angle, this bit delivers clean, accurate entry in tight-tolerance work. The bright, uncoated finish suits a wide range of base materials, and the regular spiral flute geometry promotes chip evacuation during through-hole and blind-hole drilling. Machinists, tool-and-die professionals, and CNC operators rely on this style of miniature drill bit where dimensional accuracy and tool rigidity are critical.

This bit is sized for miniature-series drilling operations requiring sub-3 mm diameters. Typical applications include precision machining of electronic components, instrument housings, medical device parts, and other close-tolerance workpieces where a standard jobber-length bit would be too large or too flexible. The straight-cylindrical shank at 3.00 mm diameter seats securely in collet-style or drill chuck toolholding systems. The 38 mm overall length keeps deflection to a minimum in short-reach setups.

Key Features

• Solid carbide construction provides rigidity and wear resistance at small diameters
• 2.85 mm cutting diameter with 0.1122 inch decimal equivalent for easy referencing
• 120-degree standard point angle for accurate self-centering on entry
• Bright, uncoated finish — no coating buildup to alter effective diameter
• Right-hand cut, regular spiral flute for efficient chip clearance
• Straight-cylindrical 3.00 mm shank compatible with standard collet and drill chuck toolholding

Compatibility

Designed as a miniature-series solid carbide drill bit for use in CNC machining centers, drill presses, and benchtop precision drilling setups that accept a 3.00 mm straight-cylindrical shank.

Installation Notes

Install in a clean, properly sized collet or drill chuck and verify runout before drilling to protect the small-diameter shank from premature breakage. Solid carbide bits are brittle — avoid lateral loading and ensure the workpiece is firmly fixtured. Cutting speeds and feed rates should follow the tooling manufacturer guidelines for the specific workpiece material. Always power down and lock out the spindle before changing bits.