Guhring 9006600003300 Micro Drill Bit 0.0130 in Cobalt Tin

Product Description

The GUHRING 9006600003300 is a wire-gauge micro drill bit sized at No. 81 (0.0130 inches decimal equivalent), designed for precision drilling in tight-tolerance applications. Built from cobalt high-speed steel with a titanium nitride (TiN) coating, it delivers extended wear resistance and reduced friction at the cutting edge. The 118-degree faceted point with web thinning and a tapered web configuration promotes accurate entry and reduces thrust load. At 0.984 inches overall length with a 1.00 mm straight-cylindrical shank, this bit is engineered for use in precision drill presses, CNC machines, and micro-machining fixtures. It conforms to DIN 1899 specification and is suited for machinists, toolmakers, and precision fabricators.

This micro drill bit is rated for primary use in aluminum and non-ferrous materials, with secondary capability in titanium alloys. Its 5xD flute-to-diameter ratio and regular spiral flute geometry support chip evacuation in shallow-to-moderate depth holes, with a maximum drilling depth of 0.075 inches (1.91 mm). Typical applications include instrument manufacturing, aerospace component drilling, electronics fabrication, and precision metalwork where hole diameter tolerance is critical. The Series 660 designation identifies this as a catalog-standard Guhring micro drill product line. MOQ is 10 units; each unit is sold individually.

Key Features

• Cobalt HSS construction for heat and wear resistance in demanding materials
• TiN coating reduces friction and extends tool life at elevated cutting speeds
• 118-degree faceted point with web thinning for accurate, low-thrust entry
• Straight-cylindrical shank at 1.00 mm for compatibility with standard micro-drill chucks and collets
• Regular spiral flute geometry supports chip evacuation in shallow holes up to 0.075 inches depth
• Manufactured to DIN 1899 specification for consistent dimensional accuracy

Compatibility

Designed as a DIN 1899-compliant micro drill bit compatible with standard 1.00 mm straight-shank tool holders, precision chucks, and collet systems used in CNC machining centers, micro drill presses, and precision hand-held fixtures. Primary workpiece materials are aluminum and non-ferrous metals; secondary rated for titanium alloys.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom personnel familiar with micro-drilling procedures. Secure the shank fully in a precision collet or chuck to minimize runout before operation. Verify spindle speed and feed rate against manufacturer tooling charts for the workpiece material before drilling. Do not exceed the maximum drilling depth of 0.075 inches without retracting to clear chips.