Accupro A-6100043R Micro Drill Bit 0.43mm Solid Carbide

Product Description

The ACCUPRO A-6100043R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. With a 0.43 mm (0.0169 inch) diameter and a 120-degree standard point angle, this bit delivers accurate hole placement and clean entry in hard and abrasive materials where high-speed steel tooling falls short. The bright, uncoated finish makes it well-suited for non-ferrous metals, printed circuit boards, composites, and similar substrates. A right-hand spiral flute geometry promotes efficient chip evacuation from shallow holes. This bit is sized for use in precision machining centers, micro-drilling spindles, and CNC equipment common in electronics manufacturing, instrument fabrication, and toolroom environments.

The A-6100043R fits applications requiring consistent, repeatable micro-hole production at small diameters. The straight-cylindrical shank at 1.00 mm diameter allows direct chuck or collet mounting in standard micro-drill holders. The 25 mm overall length (OAL) suits compact tooling setups where reach is limited. This bit is part of the ACCUPRO Miniature series, targeting production and prototype work where dimensional accuracy at sub-millimeter drill sizes is critical. It is typically used by machinists, toolroom technicians, and electronics assembly professionals.

Key Features

• 0.43 mm (0.0169 inch) drill diameter for sub-millimeter precision work
• Solid carbide construction for rigidity and wear resistance in hard materials
• 120-degree standard point angle for accurate hole positioning
• Right-hand spiral flute promotes chip clearing in blind and through holes
• Bright, uncoated finish compatible with non-ferrous metals, composites, and PCB materials
• 1.00 mm straight-cylindrical shank fits standard micro-drill collets and chucks

Compatibility

Designed as an OEM-style replacement or direct-use micro drill bit for precision CNC machining centers, micro-drilling spindles, and manual drill presses equipped with collets or chucks accepting a 1.00 mm straight shank.

Installation Notes

Micro drill bits at this diameter are fragile and require low runout spindles and properly sized collets to avoid breakage on entry. Always secure the workpiece firmly and use appropriate spindle speeds recommended for the material being drilled. Inspect the cutting edge under magnification before and after use. Handling with bare fingers should be minimized to prevent contamination of the shank and flute surfaces.