Accupro A-6120251R Micro Drill Bit 2.51mm Solid Carbide

Product Description

The ACCUPRO A-6120251R is a solid carbide micro drill bit designed for precision drilling in tight tolerances and small-diameter applications. It features a 2.51 mm (0.0988 inches) cutting diameter and a 120-degree drill point angle, making it suited for accurate hole entry without excessive thrust. The overall length is 38.00 mm with a 14.00 mm flute length and a 3.00 mm straight-cylindrical shank. The bright, uncoated finish is standard for solid carbide tooling where coating is unnecessary or undesirable. This bit is part of the Miniature Series and is intended for use by machinists, tool and die makers, and precision fabrication professionals.

This micro drill bit is used in applications requiring small, precise holes in metals, plastics, composites, or similar materials. The miniature series designation places it in high-precision machining environments such as mold making, electronics component fabrication, aerospace subassembly work, and instrument manufacturing. The spiral flute geometry and right-hand cutting direction are standard for conventional drill press and CNC machining center setups. Its straight-cylindrical shank fits standard collets and chucks sized for 3.00 mm shanks.

Key Features

• 2.51 mm (0.0988 inches) cutting diameter for micro and miniature hole applications
• Solid carbide construction provides rigidity and wear resistance in hard or abrasive materials
• 120-degree drill point angle reduces thrust and improves entry accuracy
• Bright, uncoated finish suitable for applications where coatings are not required
• Spiral flute, right-hand cut for compatibility with standard machining setups
• 3.00 mm straight-cylindrical shank fits common collets and chucks

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers, drill presses, and precision hand-held drilling equipment that accept a 3.00 mm straight-cylindrical shank.

Installation Notes

Installation and use should be performed by qualified machinists or tool setters familiar with micro-diameter tooling. Secure the shank fully in a collet or chuck rated for 3.00 mm shanks and verify runout before beginning a cut. Micro drill bits are brittle at small diameters — avoid side loading, excessive feed rates, or interrupted cuts that can cause breakage. Spindle speed and feed rate should be set according to the workpiece material and machine specifications; consult standard speeds-and-feeds references for solid carbide micro drills.