Cleveland C71283 Jobber Length Drill Bit 7.8 Mm Hss

Product Description

The CLEVELAND C71283 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and composite materials. It is manufactured from high speed steel with an oxide coating that provides light lubricity and basic corrosion resistance during cutting operations. The bit measures 7.8 mm (0.3070 inches) in diameter with an overall length of 4.606 inches and a flute length of 2.953 inches. The standard 118-degree point angle suits a wide range of common drilling applications. This bit is typically used by maintenance technicians, pipefitters, electricians, and general trades workers who require a reliable everyday drill bit for production or jobsite use.

The C71283 is suited for use in both handheld and bench-mounted drilling equipment. Its straight-cylindrical shank fits standard drill chucks across a wide range of portable drills and drill presses. The right-hand spiral flute design efficiently evacuates chips during through-hole and blind-hole drilling. This bit is appropriate for light to medium-duty drilling tasks in shop, field, and mechanical room environments where a general-purpose HSS bit is the standard specification.

Key Features

• 7.8 mm (0.3070 inches) diameter with a diameter tolerance of -0.0010 to 0.0000 inches for consistent hole sizing
• 118-degree standard point angle for general-purpose use across multiple materials
• High speed steel construction with oxide finish coating for basic wear and corrosion resistance
• Right-hand cut, 2-flute regular spiral design for efficient chip evacuation
• Web-thinned tapered web construction reduces thrust force at the drill point
• Conforms to ASME B94.11M and DIN 338 standards

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck accepting a 0.3070-inch straight-cylindrical shank, including handheld portable drills and drill presses used across trade and industrial applications.

Installation Notes

Installation is performed by licensed or qualified tradespeople using a properly rated drill or drill press. Ensure the chuck is fully tightened and the workpiece is securely clamped before beginning drilling operations. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend bit life and improve hole quality. Inspect the drill point for wear or chipping before each use and replace if the cutting edges are damaged.