Accupro A-6100163R Micro Drill Bit 1.63 Mm Solid Carbide

Product Description

The ACCUPRO A-6100163R is a solid carbide micro drill bit designed for precision drilling in small-diameter applications. It measures 1.63 mm (0.0642 inches) in diameter with an overall length of 38 mm and a flute length of 12 mm. The 120-degree point angle promotes accurate entry and reduces walking on hard materials. The bright, uncoated finish keeps the carbide substrate exposed for direct heat dissipation during high-speed drilling cycles. This bit is suited for machinists, tool-and-die technicians, and precision fabricators working with tight-tolerance hole requirements in metals, composites, and plastics.

This micro drill bit is engineered for miniature-series applications where small hole diameters and precise geometry are required. The right-hand spiral flute design provides efficient chip evacuation in short-cycle drilling operations. The straight-cylindrical shank seats securely in standard collet chucks and drill chucks sized for the 2 mm shank diameter. Typical use cases include PCB drilling fixtures, instrument housings, mold components, and other small-part machining contexts where runout control and dimensional accuracy are critical.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• 1.63 mm drill diameter with 0.0642 inch decimal equivalent for cross-reference convenience
• 120-degree standard point angle for clean entry and reduced thrust force
• Spiral flute with right-hand cut for efficient chip removal and consistent feed rates
• Straight-cylindrical 2 mm shank for compatibility with standard collet and drill chuck tooling
• Bright, uncoated finish — no coating buildup risk on precision ground cutting edges

Compatibility

Designed as an OEM-style miniature-series micro drill bit for use in CNC machining centers, drill presses, and manual spindle setups equipped with collet chucks or drill chucks accepting a 2 mm straight-cylindrical shank.

Installation Notes

Installation and use of this tooling should be performed by qualified machinists familiar with small-diameter drill bit handling. Always power down and lock out the spindle before seating or removing the bit from the chuck. Use the appropriate collet or chuck size matched to the 2 mm shank to prevent runout and shank slippage. Micro drill bits are brittle at small diameters — avoid side loading, interrupted cuts without proper feed rate adjustment, and re-chucking a bit that shows chipping or deflection.