Accupro A-6120279R Micro Drill Bit Size 35 Solid Carbide

Product Description

The ACCUPRO A-6120279R is a solid carbide micro drill bit designed for precision drilling in tight tolerances and small-diameter applications. It carries a wire gauge size of 35, which corresponds to 2.79 mm (0.1098 inch) in diameter. The 120-degree point angle reduces thrust force at entry and improves hole accuracy in hard materials. The bright, uncoated finish leaves the carbide substrate exposed for applications where coating buildup or heat sensitivity is a concern. Overall length is 38 mm with a 14 mm flute length. This bit is used by machinists, toolmakers, and precision fabricators working on close-tolerance components in metalworking and manufacturing environments.

This micro drill bit is suited for small-hole drilling operations in metals, composites, and similar hard materials where a standard-sized bit cannot be used. The straight-cylindrical shank with a 3.00 mm diameter fits standard collets and chucks on CNC machining centers, drill presses, and precision bench machines. The miniature series designation indicates it is engineered for low-diameter, high-accuracy work typical in aerospace, electronics, and precision mechanical component manufacturing. Right-hand cutting direction is the standard orientation for conventional drilling operations.

Key Features

• Solid carbide construction provides rigidity and wear resistance in hard and abrasive materials
• 120-degree point angle reduces entry thrust and improves positional accuracy
• Bright, uncoated finish suitable for applications where coatings are not required or not preferred
• Spiral flute with regular spiral type promotes chip evacuation during drilling
• 3.00 mm straight-cylindrical shank fits standard collets and drill chucks
• Right-hand cut, standard point type for conventional drilling setups

Compatibility

Designed as an OEM-style precision replacement or new-installation micro drill bit for use in standard collet systems and drill chucks accepting a 3.00 mm straight-cylindrical shank.

Installation Notes

This bit is installed by machinists or toolroom personnel in CNC or manual drilling equipment. Secure the shank fully in the collet or chuck before operation and verify runout is within tolerance for the application. Use appropriate spindle speeds for small-diameter carbide tooling, as excessive feed rates or improper speeds can cause bit breakage. Inspect the cutting edges before each use and replace if chipping or wear is observed.