Hertel 30003300 Circuit Board Drill Bit 0.84mm No. 66

Product Description

The HERTEL 30003300 is a solid carbide fast spiral circuit board drill bit designed for precision drilling in printed circuit board fabrication and related close-tolerance applications. It carries a No. 66 wire gauge size, which corresponds to 0.84 mm (0.0330 inches) in diameter, and features a 118-degree drill point angle. The bright polished finish reduces friction and heat buildup during operation. With a 35-degree helix angle and tapered web configuration, this bit promotes efficient chip evacuation in small-diameter, high-speed drilling environments. Licensed machinists and PCB fabrication technicians are the primary installers of this type of tooling.

This drill bit is suited for drilling cast iron, non-ferrous metals, and steel in applications that demand tight diameter tolerances and consistent hole quality. At 0.5 inches of flute length and 1.5 inches overall length, it fits standard PCB drilling spindles and CNC drill presses commonly used in electronics manufacturing and prototype board work. Its right-hand cutting direction is compatible with standard spindle rotation on most benchtop and production drilling equipment.

Key Features

• Solid carbide construction for rigidity and wear resistance in high-cycle drilling
• No. 66 wire gauge size, 0.84 mm diameter, with a diameter tolerance of -0.0005 to +0.0000 inches for precise hole sizing
• 118-degree drill point angle suited to a wide range of metallic and composite board substrates
• 35-degree helix angle with fast spiral geometry for effective chip removal in deep, small-diameter holes
• Bright polished coating minimizes built-up edge and reduces cutting friction
• Tapered web configuration adds strength at the drill tip without sacrificing cutting performance

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for standard PCB drilling applications requiring a No. 66 wire gauge, 0.84 mm diameter, fast spiral carbide bit with a 0.0330-inch shank diameter.

Installation Notes

Installation and use of this tooling should be performed by qualified machinists or CNC technicians familiar with small-diameter carbide drill bits. Ensure the drilling spindle is fully powered down and secured before changing tooling. Carbide bits are brittle and should not be side-loaded or used in equipment with excessive runout, as this will cause tip fracture. Always verify collet or chuck size matches the 0.84 mm shank before operation.