Accupro A-6120164R Micro Drill Bit 1.64 Mm Solid Carbide

Product Description

The ACCUPRO A-6120164R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. It features a 1.64 mm diameter with a 120-degree point angle and a spiral flute geometry that promotes efficient chip evacuation during cutting. The straight-cylindrical shank measures 2.00 mm in diameter, allowing it to seat securely in standard collet chucks and micro drill holders. At 38.00 mm overall length with a 7.20 mm flute length, this bit is built for miniature-series work where dimensional accuracy and tool rigidity are critical. The bright, uncoated finish is suitable for use across a range of materials without the added thermal considerations of coated tooling.

This bit is suited for machining, toolmaking, electronics fabrication, and precision manufacturing environments where small-diameter hole generation is required. Right-hand cutting direction and regular spiral geometry make it compatible with conventional CNC machining centers, drill presses, and hand-operated precision drilling equipment. It is commonly specified in job shops, prototype facilities, and production lines that require repeatable micro-hole performance.

Key Features

• 1.64 mm drill diameter (0.0646 inch decimal equivalent) for micro-scale precision work
• 120-degree point angle for accurate entry and reduced walking on hard surfaces
• Solid carbide construction provides rigidity and wear resistance in demanding applications
• Spiral flute design promotes chip evacuation and reduces heat buildup during drilling
• Bright, uncoated finish — no coating delamination risk in sensitive material applications
• Straight-cylindrical shank at 2.00 mm diameter for secure collet or chuck retention

Compatibility

Designed as an OEM-style miniature-series drill bit compatible with standard collet chucks and micro drill holders that accept a 2.00 mm straight-cylindrical shank.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with micro-diameter drill bit handling. Ensure spindle runout is minimized before use, as excessive runout accelerates breakage in small-diameter carbide tooling. Secure the shank fully within the collet or chuck to the recommended grip depth before operation. Avoid side-loading or manual flexing of the bit during or outside of operation.