Accupro A-6120287R Micro Drill Bit 2.87mm Solid Carbide

Product Description

The ACCUPRO A-6120287R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. Built to Wire Gauge size 33 with a diameter of 2.87 mm (0.1130 inches), this bit features a 120-degree point angle and a straight-cylindrical shank with a 3.00 mm shank diameter. The overall length is 38.00 mm with a 14.00 mm spiral flute length. The bright, uncoated finish is suited for applications where coating buildup or heat transfer concerns rule out coated tooling. Machinists and toolroom technicians working with small-diameter holes in metal, composites, or plastics will find this bit sized for repeatable, accurate results in CNC or manual drill press setups.

This micro drill bit is part of the Miniature Series and is intended for precision machining environments requiring small-diameter hole generation. Typical applications include circuit board drilling, instrument components, mold-making detail work, and small mechanical assemblies. The right-hand cutting direction and regular spiral flute geometry make it compatible with standard spindle rotation on most vertical machining centers, drill presses, and CNC turning or milling equipment configured for right-hand tooling.

Key Features

• Solid carbide construction for rigidity and wear resistance in small-diameter drilling
• 2.87 mm (0.1130 inch) diameter corresponds to Wire Gauge size 33 for standardized tooling selection
• 120-degree point angle for standard material entry and reduced walking on flat surfaces
• Bright, uncoated finish — no coating buildup risk in sensitive or reactive material applications
• Straight-cylindrical shank (3.00 mm) compatible with standard collet and chuck setups
• Right-hand cutting direction with regular spiral flute for efficient chip evacuation

Compatibility

Designed as an OEM-style replacement or direct-use micro drill bit for machining operations requiring a Wire Gauge 33 (2.87 mm) hole diameter with a straight-cylindrical shank in right-hand cutting setups.

Installation Notes

Installation and use of this micro drill bit should be performed by qualified machinists or toolroom technicians familiar with small-diameter carbide tooling. Power down and lock out the machine spindle before inserting or changing tooling. Carbide tooling is brittle — avoid side loads, interrupted cuts without proper feed-rate adjustment, and cross-threading in collet seats. Verify collet or chuck concentricity before running at speed to prevent premature bit breakage.