Cleveland C03039 Jobber Drill Bit Wire 10 Hss

Product Description

The CLEVELAND C03039 is a jobber-length twist drill bit designed for general-purpose drilling in a wide range of materials, with a primary rating for aluminum. Ground from high speed steel with a bright uncoated finish, the bit runs a standard 118-degree point angle and a fast spiral flute geometry. Wire size 10 corresponds to a decimal diameter of 0.1935 inches. Overall length is 3.625 inches with a flute length of 2.4375 inches. The two-flute right-hand spiral configuration provides efficient chip evacuation. Installation and use fall to machinists, maintenance mechanics, and trade professionals working with hand drills, drill presses, and CNC equipment.

This bit is suited for drilling aluminum, soft metals, plastics, and similar materials in light to medium production or maintenance environments. The web-thinned, tapered web design reduces thrust force at the point and improves entry on softer workpieces. The straight-cylindrical shank diameter of 0.1935 inches seats securely in standard drill chucks across bench-top and floor-standing drill presses as well as portable hand drills. It is a single-piece, individual-quantity item sold as one bit per package.

Key Features

• Wire size 10 diameter: 0.1935 inches with a tolerance of -0.0007 to 0.0000 inches
• 118-degree standard point angle for general-purpose entry geometry
• High speed steel construction with bright uncoated finish
• Fast spiral, two-flute design promotes efficient chip clearance
• Web-thinned tapered web reduces drilling thrust on softer materials
• Meets ASME B94.11M and ANSI specification requirements

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck accepting a 0.1935-inch straight-cylindrical shank, including bench drill presses, floor drill presses, and portable hand drills.

Installation Notes

Secure the straight shank fully in the chuck and verify concentricity before drilling. Use appropriate cutting fluid or lubricant when drilling metals to extend tool life and improve finish quality. Always wear eye protection and secure the workpiece with clamps or a vise before starting the cut. Inspect the cutting edges for wear or chipping before each use and replace the bit when point geometry deteriorates.