Hertel 30207600 No. 48 Circuit Board Drill Bit Solid Carbide

Product Description

The HERTEL 30207600 is a solid carbide circuit board drill bit designed for precision drilling in printed circuit board fabrication and high-accuracy machining applications. Ground to a No. 48 wire size with a decimal diameter of 0.076 inches (1.93 mm), it features a 130-degree drill point angle suited for clean entry in hard, thin, and layered materials. The fast spiral geometry with a 35-degree helix angle promotes efficient chip evacuation. The bright polished finish reduces friction and helps extend tool life. This bit is installed by CNC machine operators, PCB fabricators, and precision machining technicians.

This drill bit is applied in circuit board drilling operations where tight diameter tolerances are critical. The diameter tolerance of -0.0003 to +0.0000 inches makes it appropriate for applications requiring consistent hole size in multilayer PCB stacks. Beyond PCB work, the solid carbide construction and material application range support use in alloy steel, carbon steel, cast iron, high temperature alloy, stainless steel, and titanium workpieces where a small-diameter, high-rigidity tool is needed.

Key Features

• No. 48 wire size with 0.076 inch (1.93 mm) cutting diameter
• Solid carbide construction for rigidity and wear resistance in hard materials
• 130-degree drill point angle for clean, accurate entry
• Fast spiral with 35-degree helix angle for efficient chip evacuation
• Tapered web configuration reduces cutting force at entry
• Bright polished finish minimizes friction during drilling
• Tight diameter tolerance: -0.0003 to +0.0000 inches

Compatibility

Designed as a standard circuit board drill bit for use in CNC drilling machines and precision drill presses that accept a 0.125 inch (1/8 inch) round shank. Suitable for drilling alloy steel, carbon steel, cast iron, high temperature alloy, stainless steel, and titanium.

Installation Notes

Installation and tool changes should be performed by qualified machine operators with the spindle fully stopped and machine controls locked out. Ensure the 0.125 inch shank is properly seated and clamped in the collet or chuck to the machine manufacturer's specified engagement depth before operation. Inspect the cutting edge for chips or wear before each use, as carbide tooling is brittle and can fracture if damaged edges are run under load. Follow applicable shop safety standards and machine operating procedures for small-diameter carbide tooling.