Accupro A-6120289R Micro Drill Bit 2.89 Mm Solid Carbide

Product Description

The ACCUPRO A-6120289R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. With a 2.89 mm diameter (0.1138 inch decimal equivalent) and a 120-degree point angle, this bit delivers clean, accurate entry in hard and abrasive materials where high-speed steel tooling falls short. The bright, uncoated finish keeps the substrate visible during inspection. At 38 mm overall length with a 14 mm flute length, the compact geometry suits CNC machining centers, benchtop drill presses, and precision manual setups. A right-hand spiral flute evacuates chips efficiently, reducing heat buildup and extending tool life on small-diameter work.

This micro drill bit is suited for machining, toolroom, and light production environments where small-diameter hole accuracy matters. Typical applications include circuit board drilling, instrument components, small fixture fabrication, and precision metalworking where standard-size bits are too large. The miniature series designation indicates this bit is engineered for reduced runout and consistent ground geometry at sub-3 mm diameters. It ships individually packaged with a minimum order quantity of 10 units.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• 2.89 mm diameter with 120-degree standard point angle for clean entry
• Right-hand cut with regular spiral flute for efficient chip evacuation
• Bright, uncoated finish suitable for inspection and general-purpose use
• 3.00 mm straight-cylindrical shank fits standard collets and chucks
• 38 mm overall length with 14 mm flute length for compact micro applications

Compatibility

Designed as an OEM-style replacement or direct-fit micro drill bit for use in any setup accepting a 3.00 mm straight-cylindrical shank in the miniature drill series.

Installation Notes

Installation and use should be performed by qualified machinists or tool-and-die professionals. Ensure the machine spindle and collet or chuck are powered down and fully stopped before changing tooling. Confirm shank seating depth and runout with a dial indicator before beginning production cuts. Solid carbide tooling is brittle and should not be used in setups with excessive vibration or unsupported workpiece conditions.