Accupro A-6120299R 2.99mm Solid Carbide Micro Drill Bit

Product Description

The ACCUPRO A-6120299R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. It features a 2.99 mm diameter, a 120-degree point angle, and a spiral flute geometry that promotes efficient chip evacuation. The bright, uncoated finish is suitable for use in a wide range of base materials where coating buildup could affect hole accuracy. With an overall length of 38 mm and a flute length of 14 mm, this bit is sized for controlled depth in miniature and small-hole work. Machinists, tool-and-die technicians, and precision fabricators install this type of bit in CNC drilling centers, drill presses, and precision hand-held spindles.

This drill bit fits into the Miniature series, making it well-suited for printed circuit board work, instrument manufacturing, mold and die applications, and other precision machining tasks that require consistent hole size at sub-4 mm diameters. The right-hand cutting direction is the standard orientation for conventional drilling machines. The straight-cylindrical shank with a 3.00 mm diameter seats securely in standard collets and chucks sized for that shank diameter.

Key Features

• 2.99 mm cutting diameter with 0.1177 decimal inch equivalent for cross-reference
• 120-degree standard point angle for accurate self-centering on entry
• Solid carbide construction for rigidity and wear resistance in hard or abrasive materials
• Spiral flute with regular helix promotes chip clearance in deep or blind holes
• Bright, uncoated finish maintains close tolerances where coating thickness matters
• 38 mm overall length with 14 mm flute length for controlled reach in miniature work

Compatibility

Designed as an OEM-style miniature drill bit compatible with any machine spindle, CNC drilling station, or drill press equipped with a collet or chuck accepting a 3.00 mm straight-cylindrical shank.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before inserting or removing the bit. Ensure the collet or chuck is clean and properly sized for the 3.00 mm shank before tightening. Do not exceed the spindle speed and feed rate specifications recommended for the work material and bit diameter, as solid carbide bits are rigid but can fracture under lateral loading or excessive runout.