Hertel 30003100 Circuit Board Drill Bit Size 68 Solid Carbide

Product Description

The HERTEL 30003100 is a solid carbide circuit board drill bit designed for precision drilling in printed circuit board fabrication and related small-hole applications. Built to wire gauge size 68, it measures 0.0310 inches (0.79 mm) in diameter with a 118-degree drill point angle. The fast spiral flute geometry and 35-degree helix angle promote efficient chip evacuation, reducing heat buildup during high-speed drilling operations. The tapered web configuration adds rigidity at the cutting edge. This bit is intended for use by machinists, electronics manufacturing technicians, and precision fabricators who require tight tolerances in small-diameter drilling work.

This drill bit is suited for drilling cast iron, non-ferrous metals, and steel in addition to circuit board substrates. With a 0.5-inch flute length and 1.5-inch overall length, it fits standard drill chucks and CNC drilling spindles used in light precision machining and PCB production environments. The bright polished finish reduces friction and aids in chip flow during operation. The diameter tolerance of -0.0005 to +0.0000 inches makes it appropriate for applications where hole location and size accuracy are critical.

Key Features

• Wire gauge size 68, decimal diameter 0.0310 inches (0.79 mm) for small-hole precision work
• 118-degree drill point angle for positive center engagement and clean entry
• Fast spiral flute with 35-degree helix angle for effective chip evacuation
• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• Tapered web design adds cutting-edge support and reduces deflection
• Bright polished finish lowers friction and extends tool life in high-cycle applications
• Diameter tolerance of -0.0005 to +0.0000 inches for tight-tolerance hole sizing

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for precision drilling applications in circuit board fabrication, light machining, and metalworking setups that require wire gauge size 68 solid carbide tooling.

Installation Notes

This bit is installed by machinists or PCB drilling technicians using a compatible drill chuck or CNC spindle rated for small-diameter carbide tooling. Ensure the spindle and collet are clean and concentric before seating the bit to prevent runout. Carbide bits are brittle and should not be used in setups with excessive vibration or lateral load. Follow machine manufacturer guidelines for spindle speed and feed rate when drilling the listed material types.