Cleveland C03070 Jobber Drill Bit Letter D 0.246 in Hss

Product Description

The CLEVELAND C03070 is a jobber-length twist drill bit sized to Letter D (0.2460 inches) and manufactured from high speed steel with a bright, uncoated finish. The bit features a 118-degree standard point angle with web thinning and a tapered web configuration, which reduces thrust and improves chip clearance at the start of a cut. A fast spiral flute pattern promotes efficient chip evacuation during drilling operations. With an overall length of 4 inches and a 2-3/4-inch flute length, this bit suits general-purpose drilling in a wide range of production and maintenance applications. It meets ASME B94.11M standards and carries an ANSI specification designation.

The C03070 is rated for general-purpose drilling with aluminum listed as the primary workpiece material, though its HSS construction and standard geometry also support use in wood, plastics, and softer ferrous metals in light-duty scenarios. The straight-cylindrical shank (0.2460 inches in diameter) accepts standard 3-jaw drill chucks used on hand drills, drill presses, and CNC drilling equipment. This bit is well suited to HVAC, plumbing, and electrical tradespeople who need reliable, repeatable hole sizing for conduit, sheet metal, and structural framing work on the job site.

Key Features

• Letter D size — 0.2460 inches decimal equivalent for precise hole sizing
• 118-degree standard point with web thinning for reduced entry thrust
• Fast spiral flute design promotes rapid chip evacuation
• High speed steel construction with bright uncoated finish
• Straight-cylindrical shank fits standard 3-jaw chucks
• Compliant with ASME B94.11M and ANSI specification requirements

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard 3-jaw drill chuck that accepts a 0.2460-inch straight-cylindrical shank, including hand drills, drill presses, and CNC drilling machines.

Installation Notes

Install the bit fully into the chuck jaws and tighten securely with a chuck key before drilling. Ensure the workpiece is clamped or fixtured to prevent movement during the cut. Always wear appropriate eye protection and follow applicable OSHA and trade safety guidelines when operating drilling equipment. Do not exceed the rated speed range for the workpiece material or the drill press capacity.