Accupro A-6120069R Micro Drill Bit 0.69 Mm Solid Carbide

Product Description

The ACCUPRO A-6120069R is a miniature solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. The bit measures 0.69 mm (0.0272 inches) in diameter with a 1.50 mm straight-cylindrical shank and an overall length of 30 mm. The 120-degree standard point geometry promotes accurate entry and reduces walking on hard or dense materials. Solid carbide construction delivers the rigidity and wear resistance required when drilling small-diameter holes in metals, printed circuit boards, plastics, and composite materials. The bright, uncoated finish is standard for general-purpose micro drilling work.

This bit is suited for CNC drilling centers, benchtop drill presses, and precision hand-held applications where small-diameter hole accuracy is critical. The spiral, regular-helix flute design efficiently evacuates chips from the cut zone during short-hole drilling operations. With a 3.80 mm flute length, the A-6120069R handles shallow-depth micro holes typical in electronics manufacturing, precision machining, and instrumentation fabrication. A licensed machinist or tooling technician typically selects this bit for work requiring sub-millimeter hole diameters.

Key Features

• Solid carbide construction for rigidity and extended tool life in hard materials
• 0.69 mm (0.0272 inch) diameter for sub-millimeter precision drilling
• 120-degree standard point angle for accurate hole entry
• Bright, uncoated finish suited for general-purpose micro drilling
• Right-hand cut, spiral flute geometry for efficient chip evacuation
• Straight-cylindrical shank (1.50 mm) for compatibility with standard micro collets and chucks

Compatibility

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

Installation Notes

Installation and use of micro drill bits should be performed by a qualified machinist or tooling technician familiar with CNC or precision drilling equipment. Ensure the spindle and work-holding fixture are fully stopped and de-energized before changing tooling. Verify collet or chuck concentricity before running at speed, as runout at sub-millimeter diameters significantly affects hole quality and tool life. Avoid side-loading or using this bit for anything other than axial drilling, as solid carbide is brittle and susceptible to breakage under lateral force.