Hertel 79892550 Carbide Jobber Drill Letter G 0.2610 in

Product Description

The HERTEL 79892550 is a solid carbide jobber-length drill bit sized to Letter G (0.2610 inches), designed for precision drilling in aluminum and non-ferrous materials. Built from C2-grade solid carbide, it features a 118-degree standard point angle with web thinning for easier penetration and reduced thrust. The straight-cylindrical shank measures 0.1250 inches in diameter and seats securely in standard drill chucks. With a bright, uncoated finish and right-hand, regular spiral flute geometry, this bit delivers clean, accurate holes in production and job-site environments. Machinists, tool-and-die technicians, and metal fabricators working with non-ferrous materials will find this a reliable general-purpose drill for repeat-use applications.

This drill bit is sized for Letter G applications requiring a 0.2610-inch hole diameter, fitting within the 0.2500 to 0.3000 inch drill size range. It is suited for drilling aluminum, copper, brass, and other non-ferrous workpiece materials in both manual and CNC machine tool setups. The 2.125-inch flute length accommodates moderate-depth holes in jobber-length applications, and the tapered web configuration supports chip evacuation during cutting. Coolant-through capability is not available on this model.

Key Features

• Solid carbide construction, C2 material grade, for wear resistance in non-ferrous applications
• 118-degree standard point angle with web thinning reduces entry thrust and improves centering
• Letter G size — 0.2610 inches diameter — with a tight tolerance of -0.0005 to 0.0000 inches
• 2-flute regular spiral design promotes efficient chip removal
• Bright, uncoated finish compatible with a wide range of cutting fluids
• Straight shank (0.1250 inches) fits standard drill chucks without adapters

Compatibility

Designed for general-purpose use in drilling aluminum and non-ferrous materials, compatible with manual drill presses and CNC machining centers accepting straight-shank tooling in the 0.1250-inch shank diameter range.

Installation Notes

Installation and use should be performed by qualified machinists or tool-and-die technicians familiar with proper spindle speeds and feed rates for carbide tooling. Secure the straight shank firmly in a collet or drill chuck before operation, and confirm the machine spindle is fully stopped before tool changes. Solid carbide bits are brittle — avoid side loading, interrupted cuts without appropriate setup, or use in materials outside the rated workpiece range. Follow applicable workplace safety standards for machine guarding and eye protection during all drilling operations.