Hertel 79892741 Solid Carbide Jobber Drill Letter V

Product Description

The HERTEL 79892741 is a solid carbide jobber-length drill bit sized to Letter V (0.3770 inches) with a standard 118-degree point angle. Built from C2-grade solid carbide, it delivers the rigidity and wear resistance needed for consistent, accurate hole-making in aluminum and other non-ferrous materials. The bright, uncoated finish keeps the cutting edge sharp and is well-suited for applications where coating adhesion to softer metals is a concern. A web-thinned, tapered-web construction reduces thrust and improves chip evacuation at the cutting face. This drill is installed and used by machinists, tool-and-die professionals, and maintenance technicians working with precision drilling requirements.

The 79892741 is designed for drilling aluminum, copper, brass, and other non-ferrous workpiece materials in both production and maintenance environments. The right-hand, regular spiral flute geometry promotes efficient chip removal during through-hole and blind-hole operations. With a straight cylindrical shank measuring 0.1250 inches in diameter, it seats directly into standard drill chucks and collet holders without adapter sleeves. It is appropriate for use in CNC machining centers, drill presses, and hand-held power tools where a secure, concentric grip is maintained.

Key Features

• Letter V size: 0.3770-inch diameter, within the 0.3500 to 0.4000-inch drill bit size range
• Solid carbide construction, C2 material grade, for superior hardness and wear resistance versus high-speed steel
• 118-degree standard point angle with web thinning for reduced entry thrust
• Bright, uncoated finish optimized for non-ferrous and aluminum workpiece materials
• Regular spiral, 2-flute design with 2.75-inch flute length for effective chip clearance
• Diameter tolerance of -0.0005 to 0.0000 inches for close-tolerance hole requirements

Compatibility

Designed as a general-purpose solid carbide jobber drill for use in standard drill chucks and collet systems accepting a 0.1250-inch straight cylindrical shank, primarily suited for aluminum and non-ferrous material drilling applications.

Installation Notes

Install in a properly rated chuck or collet that matches the 0.1250-inch shank diameter and ensure concentricity before operation. Secure the workpiece firmly to prevent movement during drilling. Solid carbide tooling is brittle compared to high-speed steel; avoid side-loading, interrupted cuts without adequate support, or excessive feed rates that can cause chipping or fracture. Follow machine manufacturer guidelines and applicable shop safety standards when operating drill presses or CNC equipment.