Cleveland C72079 Jobber Length Drill Bit Letter I Hss

Product Description

The CLEVELAND C72079 is a jobber-length twist drill bit sized to Letter I, which equals 0.2720 inches in decimal. It is made from high-speed steel (HSS) with a bright, uncoated finish and a standard 118-degree split-point geometry that suits general-purpose drilling in a wide range of materials. The two-flute spiral design with a regular spiral type and tapered web configuration, combined with web thinning, helps reduce thrust and improve chip evacuation. Overall length is 4.125 inches with a 2.875-inch flute length. This bit is designed for machinists, maintenance technicians, metalworkers, and trade professionals who need a reliable, general-purpose drill for production or field use.

The C72079 fits standard drill chucks with a straight cylindrical shank of 0.2720 inches in diameter and a shank length of 1.25 inches. It is suited for drilling ferrous and non-ferrous metals, plastics, and wood composites in both shop and field environments. The 4xD flute-to-diameter ratio supports moderate-depth drilling in hand-held, drill press, and machine tool setups. It meets ASME B94.11M and DIN 338 standards, making it appropriate for both domestic and internationally specified work.

Key Features

• Letter I size — 0.2720 inches decimal equivalent for precise hole sizing
• 118-degree standard point angle for general-purpose material entry
• Web-thinned tapered web reduces axial thrust and improves bit starting
• High-speed steel construction handles heat generated in typical metal drilling
• Bright uncoated finish — easy to inspect for wear; suitable for re-sharpening
• Meets ASME B94.11M and DIN 338 standards

Compatibility

Designed as a general-purpose jobber-length drill bit in the Cleveland 2002G series, compatible with any standard drill chuck or collet system accepting a 0.2720-inch straight cylindrical shank.

Installation Notes

Installation is performed by machinists or qualified trade professionals using a drill press, CNC machine, or hand-held power drill with an appropriate chuck. Secure the shank fully in the chuck before operation and verify chuck key is removed prior to starting the machine. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and maintain tolerances. Inspect the cutting edges for wear or chipping before each use; a worn bit can wander outside the specified diameter tolerance of -0.0010 to 0.0000 inches.