Hertel 30008900 Carbide Circuit Board Drill Bit No.43

Product Description

The HERTEL 30008900 is a solid carbide circuit board drill bit designed for precision drilling in printed circuit board fabrication and tight-tolerance applications. Ground to a 118-degree drill point with a fast spiral and tapered web configuration, this bit delivers clean, accurate holes in demanding materials. The right-hand cutting geometry and 35-degree helix angle promote efficient chip evacuation and reduced heat buildup. At 0.0890 inches (No. 43 wire gauge) in diameter, it is suited for technicians and machinists who require consistent, repeatable results in small-diameter drilling work.

This drill bit is intended for use in circuit board drilling operations as well as general precision drilling in cast iron, non-ferrous metals, and steel. Its bright polished finish reduces friction and helps maintain edge sharpness over repeated use. With a 0.625-inch flute length and a 1.5-inch overall length, it fits standard drill chucks and CNC drilling equipment commonly used in electronics manufacturing, machine shops, and precision fabrication environments. Installation and use are appropriate for machinists, electronics technicians, and skilled trade professionals.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and abrasive materials
• 118-degree drill point angle for general-purpose and circuit board drilling
• Fast spiral with 35-degree helix angle promotes efficient chip removal
• Tapered web configuration reduces thrust and improves hole entry accuracy
• Bright polished finish minimizes friction and extends tool life
• Diameter tolerance of -0.0005 to +0.0000 inches for tight, repeatable hole sizing

Compatibility

Designed for use in cast iron, non-ferrous metals, and steel. Fits standard drill chucks and CNC spindles accepting No. 43 wire gauge solid carbide drill bits with a 1.5-inch overall length.

Installation Notes

This bit should be installed and operated by qualified machinists or technicians familiar with small-diameter carbide tooling. Ensure the drill chuck or collet is clean and properly tightened before operation, as carbide bits are brittle and sensitive to runout. Power down and de-energize any CNC or drill press equipment before changing tooling. Avoid side loading or using carbide bits in hand-held drills, as lateral forces can cause breakage.