Cleveland C71270 Jobber Length Drill Bit 6.5 Mm Hss

Product Description

The CLEVELAND C71270 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and plastic. It is manufactured from high speed steel with an oxide coating that provides basic lubricity and corrosion resistance during cutting operations. The bit measures 6.5 mm (0.2559 inches) in diameter with a 118-degree standard point angle and a right-hand spiral flute configuration. Overall length is 3.976 inches, keeping it within the jobber-length standard for use in drill presses, hand drills, and CNC machining centers. Web thinning reduces thrust and improves chip evacuation at the center of the cutting edge.

This bit is suited for general-purpose metalworking, fabrication, and maintenance applications in both shop and field environments. The straight-cylindrical shank fits standard three-jaw chucks without requiring a collet adapter. With a flute-to-diameter ratio of 4xD and a tapered web configuration, it handles a range of materials at moderate cutting speeds. Machinists, maintenance technicians, pipefitters, and electricians commonly use jobber-length bits of this size for bolt clearance holes, conduit work, and bracket fabrication.

Key Features

• 6.5 mm (0.2559 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 entry into ferrous and non-ferrous materials
• High speed steel construction with oxide finish for basic heat and wear resistance
• Web-thinned, tapered web design reduces cutting thrust and improves chip flow
• Right-hand, regular spiral flute with 2.480 inches of flute length for efficient chip evacuation
• Straight-cylindrical shank (0.2559 inches diameter) fits standard drill chucks directly
• Meets ASME B94.11M and DIN 338 standards for jobber-length drill geometry

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any three-jaw chuck or drill press accepting a straight-cylindrical shank in the 0.2559-inch diameter range. Conforms to DIN 338 and ASME B94.11M specifications.

Installation Notes

Secure the shank fully in the chuck and confirm concentricity before running. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend tool life and maintain hole tolerance. Reduce feed pressure as the point breaks through the exit side of the workpiece to prevent grabbing or bit breakage. Inspect the cutting edges before each use and replace if chipping or excessive wear is observed.