Hertel 66694456 Jobber Drill Bit Wire Size 46 Hss Tin

Product Description

The HERTEL 66694456 is a high speed steel jobber-length drill bit with a titanium nitride (TiN) coating, designed for precision holemaking in metal and general-purpose materials. Wire size 46 corresponds to a decimal diameter of 0.0810 inches. The 135-degree split point reduces walking on entry and lowers thrust force, making it well suited for drilling into harder substrates without a center punch. The bit features a 2-flute regular spiral flute design with a tapered web configuration and web thinning for improved chip evacuation. At 2.125 inches overall length with a 1.125-inch flute length, this is a compact jobber drill for tight-clearance applications.

This drill bit is used in holemaking operations across light manufacturing, maintenance and repair, HVAC, plumbing, and electrical trade work where small-diameter precision holes are required. The straight-cylindrical shank fits standard drill chucks without adapters. The heavy-duty grade rating and TiN coating extend tool life when drilling through mild steel, cast iron, aluminum, and similar materials. It is sold individually but requires a minimum order quantity of 12 units per order.

Key Features

• Wire size 46 diameter - 0.0810 inches decimal equivalent
• 135-degree split point reduces entry walking and cutting thrust
• TiN coating improves surface hardness and extends tool life
• Web-thinned tapered web for better chip flow and reduced heat buildup
• Regular spiral flute, right-hand cutting direction
• Heavy-duty grade construction rated to NAS specification

Compatibility

Designed as a standard jobber-length drill bit with a straight-cylindrical shank, compatible with any drill chuck sized to accept a 0.0810-inch shank diameter across handheld drills, drill presses, and CNC drilling equipment.

Installation Notes

Secure the shank fully in the chuck and verify concentricity before drilling. Power down the drill or disconnect from the power source before changing bits. Use cutting fluid or coolant when drilling ferrous metals to preserve coating life and reduce heat. Wear appropriate eye protection and follow applicable workplace safety standards during all drilling operations.