Guhring 9003010004300 Micro Drill Bit 0.0169 in Cobalt

Product Description

The GUHRING 9003010004300 is a cobalt micro drill bit engineered for precision drilling in small-diameter applications. Built to DIN 1899 standards, this bit measures 0.0169 inches in diameter with an overall length of 0.984 inches. The 118-degree faceted point and web-thinned, tapered web configuration reduce entry force and improve centering accuracy at very small diameters. The spiral flute design evacuates chips efficiently, and the bright/uncoated finish is suited for use in non-ferrous and softer alloy materials. Right-hand cutting direction and a straight-cylindrical shank ensure compatibility with standard collet and chuck systems.

This micro drill bit is intended for precision machining operations where extremely small hole diameters are required. Primary workpiece materials include aluminum and other non-ferrous metals, with secondary suitability for titanium alloys. The 5xD flute-to-diameter ratio and a maximum drilling depth of 0.093 inches make this bit well suited for shallow, high-accuracy bores in aerospace, electronics, and medical component manufacturing environments. It is typically used by machining professionals on CNC or manual drill presses and high-speed spindles where tight tolerances are critical.

Key Features

• Cobalt construction provides heat and wear resistance during high-speed drilling
• 118-degree faceted point with web thinning reduces thrust force at entry
• Spiral flute geometry promotes efficient chip evacuation in small-diameter bores
• Bright/uncoated finish is compatible with aluminum, non-ferrous metals, and titanium alloys
• Straight-cylindrical shank fits standard collet chucks and drill holders
• Diameter tolerance held to +0.000 to -0.004 mm for precision fitment

Compatibility

Designed as an OEM-specification micro drill bit per DIN 1899 Series 301, suitable for use with standard straight-shank collet systems and precision drill chucks accepting a 1.00 mm shank diameter.

Installation Notes

Installation and use of this micro drill bit should be performed by qualified machinists familiar with small-diameter tooling. Ensure the spindle and chuck are free of runout before seating the shank, as even minor misalignment at this diameter will cause bit deflection or breakage. Secure the workpiece firmly and confirm correct spindle speed for the material and diameter before drilling. Do not apply manual downward force in excess of what the feed mechanism provides — micro drill bits are highly susceptible to breakage under uneven load.