Hertel 30210400 Circuit Board Drill Bit 37 Solid Carbide

Product Description

The HERTEL 30210400 is a solid carbide circuit board drill bit sized to wire gauge 37, equal to 0.1040 inches (2.64 mm) in diameter. Built with a 130-degree split point, it starts on contact without a center punch and reduces walking on hard or laminated surfaces. The bright, uncoated finish holds tight tolerances down to -0.0003 inches on diameter. With a 1.5-inch overall length and fast spiral flute geometry, this bit clears chips quickly in shallow through-hole drilling operations. Machinists, PCB fabricators, and precision metalworking shops use this bit for small-diameter work in both manual and CNC drilling setups.

This drill bit is suited for drilling circuit boards, thin metal stock, and precision components. The fast spiral and tapered web configuration make it effective across a broad range of materials including alloy steel, carbon steel, cast iron, stainless steel, titanium, and high-temperature alloys. The 1/8-inch (0.1250-inch decimal) shank fits standard collets and drill chucks in that size range, making it easy to integrate into existing setups on benchtop drill presses, CNC machines, or handheld precision drills.

Key Features

• Wire gauge 37 diameter: 0.1040 inches (2.64 mm) for precision small-hole work
• 130-degree point angle reduces walking and improves self-centering on entry
• Solid carbide construction delivers longer tool life versus high-speed steel in abrasive or hard materials
• Fast spiral flute design promotes efficient chip evacuation in shallow holes
• Tapered web configuration adds strength at the cutting tip
• 35-degree helix angle suited for a wide range of ferrous and exotic alloy materials
• Bright uncoated finish maintains dimensional accuracy with no coating buildup

Compatibility

Designed as a direct-fit replacement or stock drill bit for any setup using a 1/8-inch shank collet or drill chuck. Suitable for CNC drilling centers, benchtop drill presses, and handheld precision drills used in PCB fabrication and precision metalworking applications.

Installation Notes

Install in a 1/8-inch collet or drill chuck and confirm runout before beginning a production run. Solid carbide bits are brittle compared to high-speed steel; avoid side loading or flex that can cause tip fracture. Always power down and lock out the machine before changing bits. Match feed rate and spindle speed to the workpiece material to avoid premature chipping or breakage.