Hertel 30007000 Circuit Board Drill Bit Size 50 1.78mm

Product Description

The HERTEL 30007000 is a solid carbide circuit board drill bit designed for precision drilling in printed circuit board fabrication and light metalworking applications. Built to wire gauge size 50 with a decimal diameter of 0.0700 inches (1.78 mm), this bit features a fast spiral flute geometry and a 118-degree drill point angle for clean, accurate hole entry. The solid carbide construction and bright polished finish support tight tolerance drilling. The tapered web configuration adds stability at depth, and the right-hand cutting direction suits standard drill press and CNC spindle setups. This bit is typically installed and used by electronics fabricators, precision machinists, and maintenance technicians working with small-diameter through-holes.

This drill bit is suited for use in circuit board drilling, light sheet metal work, and precision machining operations involving cast iron, non-ferrous metals, and steel. The fast spiral flute with a 35-degree helix angle promotes efficient chip evacuation in shallow-depth, small-diameter bores. The compact overall length of 1.5 inches and 0.625-inch flute length make it a practical choice for bench-top drill presses, CNC drilling machines, and PCB routing stations where tight clearance and repeatability matter.

Key Features

• Solid carbide construction for wear resistance and dimensional stability in small-diameter drilling
• Wire size 50 diameter — 0.0700 inches (1.78 mm) — with a tight tolerance of -0.0005 to +0.0000 inches
• 118-degree drill point angle for clean entry in metallic and PCB substrates
• Fast spiral flute with 35-degree helix angle for effective chip clearance
• Bright polished finish reduces built-up edge and aids chip flow
• Tapered web configuration improves rigidity and reduces deflection at depth

Compatibility

Designed for use in standard CNC PCB drilling machines, bench-top drill presses, and precision drilling stations that accept a 1.78 mm (0.0700 inch) straight shank. Suitable for drilling cast iron, non-ferrous metals, and steel.

Installation Notes

Installation is performed by machinists, PCB fabrication technicians, or maintenance professionals with appropriate small-diameter drilling equipment. Power down and lock out the spindle before loading or unloading the bit. Secure the shank fully in the collet or chuck to the manufacturer-recommended depth before operation. Inspect the cutting edges for chipping or wear before each use, as solid carbide bits at this diameter are brittle and sensitive to side loading.