Accupro A-6120091R Micro Drill Bit Size 64 Solid Carbide

Product Description

The ACCUPRO A-6120091R is a solid carbide micro drill bit sized at wire gauge 64 (0.0358 inches decimal equivalent) with a 120-degree point angle. Designed for precision drilling in tight tolerances, this bit features a spiral flute geometry with regular spiral type and a straight-cylindrical shank measuring 1.50 millimeters in diameter. The bright uncoated finish leaves the carbide substrate fully exposed, making it straightforward to inspect for wear. Overall length is 30.00 millimeters with a flute length of 4.80 millimeters. This miniature series bit is suited for machinists, toolmakers, and precision fabricators working in small-diameter hole applications.

This micro drill bit is used in applications requiring extremely small-diameter holes, including printed circuit board drilling, instrument manufacturing, watchmaking, and precision metalworking. The right-hand cutting direction and standard point type make it compatible with conventional CNC machining centers, drill presses, and rotary hand tools configured for miniature tooling. It is well suited for non-ferrous metals, plastics, and similar materials where carbide hardness provides a consistent edge life at small diameters.

Key Features

• Wire gauge size 64 with 0.0358 inch decimal equivalent for precise hole sizing
• 120-degree standard point angle reduces thrust and improves entry accuracy
• Solid carbide construction provides hardness and edge retention at miniature diameters
• Bright uncoated finish allows direct inspection of cutting edge condition
• Spiral flute design promotes chip evacuation in small-diameter bores
• Straight-cylindrical shank at 1.50 millimeters fits standard miniature collets and chucks

Compatibility

Designed for use in standard miniature-series toolholders, collets, and chucks accepting a 1.50 millimeter straight-cylindrical shank, as used on CNC machining centers, micro drill presses, and precision rotary tools.

Installation Notes

Micro drill bits at this diameter are fragile and should be installed and removed with care to prevent breakage. Ensure the spindle or chuck is fully stopped and de-energized before inserting or changing tooling. Use a collet or chuck rated for 1.50 millimeter shank diameters and verify runout before drilling to minimize bit deflection. Do not exceed the recommended feed and speed parameters for solid carbide miniature tooling in your material.