Accupro A-6100164R Micro Drill Bit 1.64mm Solid Carbide

Product Description

The ACCUPRO A-6100164R is a miniature solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. It measures 1.64 mm (0.0646 inches) in diameter with a 120-degree standard point angle and a spiral flute geometry that promotes clean chip evacuation. The overall length is 38 mm and the flute length is 12 mm. The bright, uncoated finish suits applications where coating interaction with the workpiece is a concern. Right-hand cutting direction and a straight-cylindrical shank with a 2 mm shank diameter make it compatible with standard collet chucks and precision drill presses used in close-tolerance machining environments.

This micro drill bit is intended for machinists, toolmakers, and precision fabricators working on small-diameter hole applications in materials that respond well to carbide tooling. Typical use cases include PCB drilling, instrument components, medical device parts, and small aerospace hardware where dimensional accuracy and minimal runout are critical. The miniature series designation indicates it is built for fine-detail work rather than general-purpose production drilling.

Key Features

• 1.64 mm (0.0646 inch) drill diameter for precision micro-hole applications
• Solid carbide construction provides rigidity and wear resistance in hard or abrasive materials
• 120-degree standard point angle for accurate entry and reduced walking
• Spiral flute design promotes efficient chip removal in shallow and moderate-depth holes
• Bright/uncoated finish — no coating buildup risk when drilling sensitive substrates
• Straight-cylindrical shank at 2 mm diameter fits standard precision collets and chucks

Compatibility

Designed as an OEM-style miniature series micro drill bit suitable for use in precision collet chucks, micro drill presses, and CNC machining centers configured for small-diameter tooling with a 2 mm straight-cylindrical shank.

Installation Notes

Installation and use of this bit should be performed by qualified machinists familiar with micro-diameter tooling practices. Ensure the spindle and collet are clean and true before seating the shank to minimize runout. Secure the workpiece firmly before drilling, as micro-diameter carbide bits are brittle and susceptible to breakage under lateral load or workpiece movement. Operate at manufacturer-recommended spindle speeds for the workpiece material and bit diameter to extend tool life.