Hertel 71206783 Jobber Drill Bit Wire 61 Hss Oxide

Product Description

The HERTEL 71206783 is a jobber length drill bit sized to wire gauge number 61, with a decimal diameter of 0.0390 inches. Manufactured from high speed steel with an oxide coating, this bit is built for general-purpose drilling in metal, wood, and plastics. It features a 118-degree standard point angle, a two-flute regular spiral with web-thinned tapered web, and a straight-cylindrical shank measuring 0.0390 inches in diameter. The overall length is 1.625 inches with a flute length of 0.6875 inches. Installed by machinists, maintenance technicians, and metal fabricators, this bit handles light-duty production and repair work where precision small-diameter holes are required.

This drill bit is suited for use in benchtop drill presses, handheld electric drills, and CNC drilling operations where small wire-gauge holes are needed. The 118-degree point angle makes it a general-purpose choice for mild steel, aluminum, brass, and similar materials. The right-hand cutting direction and straight-cylindrical shank provide reliable seating in standard Jacobs-style chucks. At 0.0390 inches diameter, this bit falls within the 0.0000 to 0.0500 inch decimal inch size range, making it appropriate for fine detail work, pilot holes, and precision assembly applications.

Key Features

• Wire gauge size 61 with 0.0390 inch decimal diameter for precision small-hole drilling
• High speed steel construction with oxide coating for wear resistance and reduced friction
• 118-degree standard point angle suitable for general-purpose materials including mild steel and aluminum
• Web-thinned tapered web design reduces thrust and improves chip evacuation
• Two-flute regular spiral with right-hand cutting direction
• Straight-cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as a general-purpose jobber length drill bit for use in any standard drill chuck accepting a 0.0390 inch straight-cylindrical shank.

Installation Notes

Installation is performed by machinists or maintenance technicians using a standard keyed or keyless drill chuck. Ensure the shank is fully seated and the chuck is tightened before operation. Use appropriate cutting fluid when drilling ferrous metals to extend tool life and improve hole finish. At this diameter, feed pressure should be light and consistent to avoid bit breakage.