Hertel 85707644 Jobber Drill Bit Wire 40 Hss Tin

Product Description

The HERTEL 85707644 is a jobber-length drill bit designed for general-purpose metal drilling in production and maintenance applications. It carries a wire gauge size of 40, corresponding to a decimal diameter of 0.0980 inches. The bit is manufactured from high speed steel (HSS) and features a titanium nitride (TiN) coating that increases surface hardness and extends tool life compared to uncoated HSS. The 118-degree standard point angle suits drilling into mild steel, aluminum, and similar materials. Overall length is 2-3/8 inches with a flute length of 1-3/8 inches. A right-hand spiral flute with a regular helix and tapered web configuration provides efficient chip evacuation. Installation is handled by machinists, maintenance technicians, and trade professionals using standard drill chucks or drill presses.

This bit is suited for light-duty production drilling, maintenance repair, and fabrication work where wire-gauge hole sizes are required. The straight-cylindrical shank accepts standard drill chucks without modification. The general-purpose grade and wire size 40 designation make it a common selection for tapping pilot holes, electrical panel knockouts, and light sheet metal work across HVAC, plumbing, and electrical trades. The web-thinned geometry reduces thrust requirements when drilling harder materials. Each package contains one bit; the minimum order quantity is 12 pieces.

Key Features

• Wire size 40 with a decimal diameter of 0.0980 inches for precise hole sizing
• TiN coating improves surface hardness and extends cutting tool life over uncoated HSS
• 118-degree standard point angle for general-purpose drilling in ferrous and non-ferrous metals
• Right-hand spiral flute with regular helix promotes clean chip evacuation
• Web-thinned, tapered web design reduces drilling thrust on harder substrates
• Straight-cylindrical shank fits standard drill chucks and drill press spindles without adapters

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with standard drill chucks and drill presses accepting a 0.0980-inch straight-cylindrical shank.

Installation Notes

Install and remove drill bits only with the drill or press fully de-energized and the chuck key removed from the chuck. Secure the workpiece with a clamp or vise before drilling to prevent movement and reduce injury risk. Use appropriate cutting fluid when drilling hardened or stainless materials to preserve coating life. Inspect the cutting edges for wear or chipping before each use and replace any bit showing visible damage to maintain hole quality and operator safety.