Hertel 30009950 Circuit Board Drill Bit 39 Solid Carbide

Product Description

The HERTEL 30009950 is a solid carbide circuit board drill bit designed for precision drilling in printed circuit board fabrication and related electronic manufacturing operations. The bit is sized to wire gauge 39, with a decimal diameter of 0.0995 inches (2.53 mm), and features a 118-degree point angle for accurate entry and minimal walkout on hard substrates. The fast spiral geometry and tapered web promote efficient chip evacuation during high-speed drilling. With an overall length of 1.5 inches and a bright, uncoated finish, this bit is suited for use in CNC drilling equipment and manual precision presses operated by electronics manufacturing and tool-room technicians.

This drill bit is intended for drilling operations on cast iron, non-ferrous metals, and steel, in addition to circuit board materials. The 0.625-inch flute length provides adequate chip clearance for the shallow-depth holes common in PCB and light metalworking applications. The right-hand cut and 35-degree helix angle are standard for general-purpose CNC and benchtop drilling setups in light manufacturing and fabrication environments.

Key Features

• Wire gauge size 39 with 0.0995-inch decimal diameter for precise PCB and metalworking hole sizes
• 118-degree point angle provides clean entry on cast iron, non-ferrous metals, and steel
• Solid carbide construction delivers hardness and wear resistance in high-speed drilling applications
• Fast spiral with 35-degree helix angle and tapered web for efficient chip evacuation
• Bright, uncoated finish allows direct visual inspection of cutting edge condition
• Right-hand cut, 1.5-inch overall length, 0.625-inch flute length for compact precision drilling

Compatibility

Designed for use in CNC drilling machines and precision benchtop drill presses where a wire gauge 39, 0.0995-inch solid carbide bit is required for circuit board, cast iron, non-ferrous metal, or steel applications.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or electronics manufacturing technicians familiar with high-speed carbide tooling. Ensure the spindle and collet are clean and properly sized to accept the 0.0995-inch shank before seating the bit. Carbide tooling is brittle and susceptible to chipping from lateral loading or improper chuck engagement — avoid side pressure and confirm runout is within acceptable tolerance before beginning a drilling cycle. Power down all equipment completely before changing or inspecting tooling.