Accupro A-6120029R Micro Drill Bit Size 84 Solid Carbide

Product Description

The ACCUPRO A-6120029R is a solid carbide micro drill bit sized to wire gauge 84, with a decimal diameter of 0.0114 inches. It features a 120-degree standard point angle and a spiral flute with right-hand cut for clean, precise penetration in small-diameter drilling applications. The straight-cylindrical shank measures 1.00 millimeter in diameter, and the overall length is 25.00 millimeters. The bright, uncoated finish suits applications where coating is not required or where base carbide hardness alone meets the task. This bit is designed for machinists, toolmakers, and precision fabricators working with micro-diameter hole requirements.

The A-6120029R is suited for precision drilling in electronics manufacturing, instrument fabrication, mold and die work, and other applications requiring tight-tolerance micro holes. Its miniature series designation makes it appropriate for CNC machining centers, drill presses, and precision hand-held spindle tools operating at high RPM with minimal runout. The 1.30 millimeter flute length supports chip evacuation in shallow micro-hole applications through a variety of materials including plastics, non-ferrous metals, and light alloys.

Key Features

• Wire gauge size 84 with a decimal diameter of 0.0114 inches for micro-precision drilling
• Solid carbide construction provides hardness and wear resistance at small diameters
• 120-degree standard point angle for accurate entry and reduced walking
• Spiral flute, right-hand cut promotes efficient chip removal
• Straight-cylindrical shank at 1.00 millimeter diameter fits standard micro-collet systems
• Bright, uncoated finish suitable for general micro-drilling tasks

Compatibility

Designed as an OEM-style replacement and production micro drill bit for precision machining setups requiring a wire gauge 84 straight-shank carbide bit with a 1.00 millimeter shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom personnel familiar with micro-diameter tooling. Secure the bit in a precision collet or chuck rated for 1.00 millimeter shank diameters and verify runout before drilling. Ensure the spindle speed and feed rate are appropriate for solid carbide micro tooling in the workpiece material. At this diameter, the bit is extremely fragile — avoid side loading, excessive feed pressure, or use in worn or imprecise spindle systems.