Hertel 71206890 Jobber Drill Bit Wire 72 0.025 in Hss

Product Description

The HERTEL 71206890 is a jobber-length twist drill bit designed for precision drilling in metal, plastic, and similar materials. Sized to wire gauge 72, this bit measures 0.0250 inches in diameter with a 1.125-inch overall length and a 5/16-inch flute length. It is manufactured from high speed steel with an oxide coating that provides basic lubricity and corrosion resistance during operation. The 118-degree standard drill point and right-hand spiral flute geometry suit general-purpose hole-making in a wide range of shop and field applications. The straight-cylindrical shank accepts standard drill chucks without modification.

This bit is suited for light-duty drilling tasks requiring a small-diameter, wire-gauge hole. Typical applications include pilot hole drilling, instrument and electronics fabrication, light sheet metal work, and plastic components. The regular spiral and tapered web construction with web thinning support controlled chip evacuation in these applications. It is commonly used by machinists, maintenance technicians, and precision tradespeople working with small-diameter fastener clearances or precision layout work.

Key Features

• Wire gauge size 72 at 0.0250 inches diameter for small-hole precision work
• High speed steel construction for general-purpose durability across common workpiece materials
• Oxide coating provides basic surface protection and reduces friction at the cutting edge
• 118-degree standard point angle compatible with most drill press and hand-drill setups
• Web-thinned tapered web reduces thrust and improves chip flow in small-diameter drilling
• Right-hand, two-flute regular spiral geometry for standard clockwise drilling operation

Compatibility

Designed as a general-purpose jobber-length drill bit for use in any standard drill chuck accepting a 0.0250-inch straight-cylindrical shank.

Installation Notes

Secure the workpiece firmly before drilling to prevent movement with small-diameter bits that are prone to deflection. Use a drill press or stable hand drill running at an appropriate speed for the workpiece material and bit diameter. Inspect the cutting edges before use and replace the bit if chipping or wear is visible, as small-diameter bits are sensitive to breakage under lateral load. Always wear appropriate eye protection when operating drilling equipment.