Accupro A-6120135R Micro Drill Bit 1.35 Mm Solid Carbide

Product Description

The ACCUPRO A-6120135R is a miniature solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. With a 1.35 mm (0.0531 inch) diameter and a 120-degree point angle, this bit delivers clean entry and consistent hole geometry in small-diameter work. The bright, uncoated finish suits a wide range of base materials. Overall length is 30 mm, with a 6.70 mm flute length and a 1.50 mm straight-cylindrical shank. Right-hand spiral flute geometry clears chips efficiently during operation. Machinists, tool and die makers, and precision fabricators working with small-diameter holes will find this bit suited to their production and maintenance needs.

This micro drill bit fits into standard precision drilling applications where small hole diameters are required, such as printed circuit board fabrication, watch and instrument manufacturing, mold work, and fine metalworking. The miniature series designation indicates it is built for sub-2 mm diameter work. Its solid carbide construction maintains rigidity at these small diameters, reducing deflection and breakage risk compared to high-speed steel alternatives. It is sold individually, with a minimum order quantity of 10 units.

Key Features

• 1.35 mm diameter with 0.0531 inch decimal equivalent for cross-reference
• 120-degree standard point angle for accurate spot entry without a center drill
• Solid carbide construction for rigidity and wear resistance at micro diameters
• Bright, uncoated finish suitable for a broad range of workpiece materials
• Right-hand cut with regular spiral flute for effective chip evacuation
• 1.50 mm straight-cylindrical shank for compatibility with standard collet chucks and drill chucks

Compatibility

Designed as an OEM-style replacement or production micro drill bit for use in standard collet chucks and precision drill chucks accepting a 1.50 mm straight-cylindrical shank.

Installation Notes

This bit is installed by a machinist or precision drilling technician using a compatible collet chuck or drill chuck rated for 1.50 mm shanks. Ensure the machine spindle is fully powered down and secured before changing bits. Use appropriate spindle speeds and feed rates for the workpiece material and bit diameter to avoid breakage at this micro size. No coolant-through capability is present on this bit, so external coolant or mist lubrication should be considered for extended runs.