Hertel 30004100 Circuit Board Drill Bit Size 59 Solid Carbide

Product Description

The HERTEL 30004100 is a solid carbide circuit board drill bit designed for precision drilling in printed circuit board fabrication and electronics manufacturing. It carries a wire gauge size of 59, translating to a decimal diameter of 0.0410 inches (1.04 mm). The 118-degree split-point geometry seats cleanly on entry, while the fast spiral and 35-degree helix angle clear chips efficiently from shallow holes. At 1.5 inches overall length with a 0.625-inch flute, this bit is sized for typical PCB drilling fixtures. It is installed by precision machinists, electronics fabricators, and trade professionals requiring tight-tolerance small-diameter drilling.

This bit is suited for drilling cast iron, non-ferrous metals, and steel in addition to circuit board substrates. The tapered web configuration provides rigidity at small diameters, reducing deflection during entry. Its bright, uncoated finish makes it a straightforward replacement for standard wire-gauge bits in CNC drilling centers or hand-held precision drill presses. The heavy-duty grade rating makes it appropriate for production environments where consistent hole quality is required across multiple boards or metal components.

Key Features

• Wire gauge size 59 with 0.0410-inch decimal diameter for tight-tolerance hole work
• Solid carbide construction provides hardness and wear resistance across cast iron, non-ferrous metals, and steel
• 118-degree point angle for accurate self-centering entry on flat and curved surfaces
• Fast spiral with 35-degree helix angle promotes efficient chip evacuation in small-diameter holes
• Tapered web configuration adds rigidity and reduces bit deflection at this diameter
• Bright uncoated finish — no coating buildup to affect dimensional accuracy

Compatibility

Designed as an OEM-style replacement for wire-gauge solid carbide circuit board drill bits used in CNC PCB drilling equipment and precision drilling fixtures accepting size 59 wire-gauge shanks.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or electronics fabrication technicians familiar with small-diameter carbide tooling. Ensure the drill spindle and collet are free of debris before seating the shank, as carbide bits at this diameter are brittle and sensitive to runout. Power down and lock out the machine before changing bits. Avoid side-loading or flexing the bit during use, as solid carbide will fracture rather than bend under lateral stress.