Accupro A-6120030R Micro Drill Bit 0.3 Mm Solid Carbide

Product Description

The ACCUPRO A-6120030R is a solid carbide micro drill bit designed for precision drilling at extremely small diameters. Built for miniature-series applications, this bit features a 0.3 mm (0.0118 inch) cutting diameter, a 120-degree standard point angle, and a right-hand spiral flute configuration. The bright uncoated finish suits applications where coating thickness would compromise dimensional accuracy. With an overall length of 25 mm and a 1.00 mm straight-cylindrical shank, it fits standard micro drill chucks and collet holders used in close-tolerance work. Machinists, tool-and-die technicians, and precision fabricators rely on this geometry for consistent entry and clean hole formation in small-format workpieces.

This micro drill bit is suited for precision machining operations where small hole diameters are required, including circuit board work, watchmaking fixtures, medical device components, and fine mechanical assemblies. The 1.60 mm flute length accommodates shallow-depth drilling passes typical in miniature-series applications. The solid carbide construction maintains rigidity at this diameter, reducing deflection in both manual and CNC spindle setups. It is sold individually per package with a minimum order quantity of 10 units.

Key Features

• 0.3 mm (0.0118 inch) cutting diameter for fine, precise hole formation
• Solid carbide construction provides rigidity and wear resistance at miniature scale
• 120-degree standard point angle for clean entry on entry-level to moderate-hardness materials
• Right-hand spiral flute promotes efficient chip evacuation in shallow holes
• Bright uncoated finish preserves dimensional integrity where coating buildup is not acceptable
• 1.00 mm straight-cylindrical shank fits standard micro collet and chuck systems

Compatibility

Designed for use in CNC machining centers, precision drill presses, and micro spindle setups accepting a 1.00 mm straight-cylindrical shank in miniature-series toolholders.

Installation Notes

Installation and use of micro drill bits at this diameter should be performed by qualified machinists or tooling technicians familiar with micro-drilling procedures. Power down and fully de-energize the spindle before inserting or removing the bit from the collet or chuck. At 0.3 mm diameter, excessive feed rates or lateral force will cause breakage; consult the machine manufacturer's feed and speed guidelines for solid carbide micro tooling. Inspect the cutting edge under magnification before each use to confirm the tip is intact.