Hertel 30012850 Circuit Board Drill Bit No. 30 Solid Carbide

Product Description

The HERTEL 30012850 is a solid carbide circuit board drill bit sized to No. 30 wire gauge, equivalent to 0.1285 inches (3.26 mm) in diameter. It features a 118-degree drill point angle and a fast spiral flute design with a 35-degree helix angle, which promotes efficient chip evacuation during high-speed drilling operations. The tapered web configuration adds rigidity at the cutting tip. With a flute length of 0.75 inches and an overall length of 1.5 inches, this bit is sized for precision drilling in printed circuit boards and other thin-material applications. It is installed by electronics technicians, CNC operators, and precision machining professionals.

This drill bit is suited for use in circuit board fabrication, light metalworking, and precision drilling applications. Its material compatibility covers cast iron, non-ferrous metals, and steel, making it functional across a range of substrates beyond PCB work. The bright polished finish reduces friction and helps maintain cutting edge integrity during repetitive production runs. Right-hand cutting direction is standard for conventional drill press and CNC spindle setups.

Key Features

• No. 30 wire size, 0.1285 inches (3.26 mm) diameter for precise hole sizing
• Solid carbide construction for hardness and wear resistance in high-cycle drilling
• 118-degree drill point angle optimized for entry accuracy in thin materials
• Fast spiral flute with 35-degree helix angle for efficient chip removal
• Tapered web design adds cutting tip rigidity and reduces walking
• Bright polished finish minimizes friction and heat buildup at the cutting edge

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC drilling machines, drill presses, and PCB routing equipment that accept a 0.1285-inch (3.26 mm) straight shank drill bit in No. 30 wire gauge sizing.

Installation Notes

This bit is installed by qualified machinists or electronics fabrication technicians using compatible collets or chucks rated for the 3.26 mm shank diameter. Confirm spindle speed settings are appropriate for the substrate material before beginning a run. Inspect the cutting edge for chipping before each use, as solid carbide is brittle and susceptible to damage from improper handling or incorrect feed rates. Secure the workpiece firmly to prevent movement during drilling.