Hertel 30019900 Circuit Board Drill Bit Wire 8 Solid Carbide

Product Description

The HERTEL 30019900 is a solid carbide circuit board drill bit sized at wire gauge 8 (0.1990 inches / 5.05 mm). It features a 118-degree drill point angle and a fast spiral flute design with a 35-degree helix angle, making it well suited for clean, precise holes in printed circuit boards and similar thin-material applications. The tapered web configuration improves chip evacuation and reduces heat buildup at the cutting edge. With a bright polished finish and right-hand cutting direction, this bit delivers consistent performance across multiple materials. It is intended for use by machinists, electronics fabricators, and precision drilling technicians requiring tight dimensional tolerances.

This drill bit is designed for use in circuit board fabrication, precision metalworking, and light manufacturing environments. Rated material applications include cast iron, non-ferrous metals, and steel, making it versatile across common shop and production floor scenarios. The compact overall length of 1.5 inches and 0.75-inch flute length make it appropriate for close-tolerance work in benchtop drill presses, CNC drilling machines, and precision hand-held spindle equipment where rigidity and accuracy are critical.

Key Features

• Solid carbide construction for rigidity and long tool life in hard materials
• Wire gauge 8 diameter: 0.1990 inches (5.05 mm) with a tight tolerance of -0.0005 to +0.0000 inches
• 118-degree drill point angle for general-purpose drilling across steel, cast iron, and non-ferrous metals
• Fast spiral flute with 35-degree helix angle promotes efficient chip removal and reduced heat buildup
• Tapered web configuration improves point strength and centering
• Bright polished finish reduces friction and aids chip flow

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide circuit board drill bit for precision drilling applications in circuit board fabrication and general metalworking operations.

Installation Notes

This bit is installed by machinists and precision drilling technicians using CNC drilling equipment, benchtop drill presses, or precision spindle machines. Before mounting, confirm the spindle collet or chuck accepts a 5.05 mm shank diameter. Inspect the cutting edges for chips or wear prior to each use, as solid carbide is brittle and sensitive to side-loading. Secure the workpiece firmly to prevent movement during the drilling operation.