Hertel 79892576 Solid Carbide Jobber Drill Bit Letter H

Product Description

The HERTEL 79892576 is a solid carbide jobber-length drill bit sized to letter H (0.2660 inches), designed for precision hole-making in demanding materials. Built from C2-grade solid carbide with a bright finish, it delivers high performance in ferrous and non-ferrous metals, hard plastics, and composite materials. The standard 118-degree split point with web thinning reduces thrust and improves centering without a center punch. At 3.5 inches overall length with a 2.125-inch spiral flute, this bit fits standard drill chucks and CNC machining centers. It is used by machinists, tool and die workers, and maintenance technicians requiring tight-tolerance bores.

This bit is suited for production and job-shop drilling in materials that demand carbide over high-speed steel. The straight cylindrical shank at 0.2660 inches diameter seats directly in standard collets or keyed chucks. The regular spiral flute geometry and right-hand cut handle general-purpose through-hole and blind-hole applications in light to medium-duty drilling setups. The tapered web configuration maintains bit rigidity through the full flute length, reducing deflection in deeper cuts.

Key Features

• Solid C2-grade carbide construction for extended tool life in hard and abrasive materials
• 118-degree standard point angle with web thinning for reduced entry thrust and improved self-centering
• Bright (uncoated) finish suitable for dry or wet cutting applications
• 2-flute regular spiral geometry promotes chip evacuation in through-hole drilling
• Diameter tolerance of -0.0005 to 0.0000 inches for consistent, close-tolerance bore sizing
• Tapered web and cylindrical shank ensure concentricity and chuck compatibility

Compatibility

Designed as a jobber-length replacement or production drill bit for any application requiring a letter H (0.2660-inch) diameter bore; fits standard drill chucks, ER collets, and CNC tool holders accepting a 0.2660-inch straight cylindrical shank.

Installation Notes

Installation and use of carbide drill bits should be performed by qualified machinists or maintenance technicians familiar with cutting tool safety. Ensure the spindle is fully stopped and machine power is locked out before changing tooling. Secure the shank fully within the chuck or collet to the manufacturer-recommended engagement depth to prevent pullout. Carbide is brittle and should not be subjected to side loads, interrupted cuts, or impact conditions outside its design rating.