Hertel 30203500 Circuit Board Drill Bit Size 65 Carbide

Product Description

The HERTEL 30203500 is a solid carbide circuit board drill bit designed for precision drilling in printed circuit board fabrication and high-tolerance machining applications. Built from solid carbide, this bit delivers the rigidity and wear resistance needed for accurate, repeatable hole placement in hard and abrasive materials. It features a wire gauge size 65 cutting diameter of 0.0350 inches (0.89 mm), a 130-degree drill point angle, and a fast spiral flute design with a 35-degree helix angle and tapered web configuration. The 1/8-inch shank diameter accommodates standard collet-style chucks. This type of tooling is typically handled by machinists, PCB fabricators, and precision metalworking technicians.

This drill bit is suited for drilling small-diameter holes in a range of materials including alloy steel, carbon steel, cast iron, stainless steel, titanium, and high-temperature alloys. The fast spiral geometry promotes efficient chip evacuation in deep or blind-hole applications. With an overall length of 1-1/2 inches and a 3/8-inch flute length, this bit is sized for compact drilling setups, CNC drilling machines, and dedicated PCB drill presses where tight dimensional control is required.

Key Features

• Solid carbide construction for high rigidity and wear resistance in abrasive materials
• Wire gauge size 65 cutting diameter at 0.0350 inches (0.89 mm) for precision small-hole work
• 130-degree drill point angle reduces thrust force and improves entry accuracy
• Fast spiral flute with 35-degree helix angle promotes chip evacuation
• Tapered web configuration adds strength at the cutting tip
• Bright polished finish reduces friction and aids chip flow
• Right-hand cutting direction compatible with standard spindle rotation

Compatibility

Designed as an OEM-style replacement or direct tooling option for CNC drilling machines, PCB drill presses, and precision machining centers that accept a 1/8-inch straight shank drill bit.

Installation Notes

This bit is installed by machinists or PCB fabrication technicians using a collet chuck or precision drill chuck rated for the 1/8-inch shank diameter. Ensure the spindle and workholding are completely stopped before changing tooling. Verify runout with a dial indicator before production use, as carbide bits at this diameter are sensitive to misalignment and can fracture under lateral load. Follow machine manufacturer guidelines for spindle speed and feed rate when working with solid carbide tooling at small diameters.