Cleveland C08766 Taper Length Drill Bit 9/32 in Hss

Product Description

The CLEVELAND C08766 is a taper length, high-speed steel drill bit designed for general-purpose drilling in metal fabrication and machining applications. Built to Series 2510 standards, it features a 118-degree standard point angle and a web-thinned, tapered web configuration that reduces thrust and improves chip clearance at the cutting edge. The straight shank measures 0.2812 inches in diameter, matching the 9/32-inch bit diameter for direct chuck mounting. With a 3-7/8-inch flute length and a 6-1/4-inch overall length, this bit provides extended reach compared to jobber-length equivalents. Right-hand spiral fluting evacuates chips efficiently during through-hole and deep-hole drilling operations.

This drill bit is suited for production and maintenance drilling in alloy steel, carbon steel, and cast iron. The taper length format is commonly selected when jobber-length bits lack the reach needed for thicker workpieces or fixtures. It is appropriate for use in drill presses, CNC machining centers, and hand-held power drills where a straight shank is compatible. Machinists, tool-and-die technicians, and maintenance mechanics are the primary users in shop and field environments.

Key Features

• 9/32 inch (0.2812 inch) diameter with a tight tolerance of +0.0000 to -0.0010 inches for accurate hole sizing
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High-speed steel construction with coating for improved surface hardness and wear resistance
• 3-7/8-inch spiral flute length provides extended reach beyond standard jobber-length bits
• Right-hand cutting direction with regular spiral flute for efficient chip evacuation
• Straight shank with no threading for universal chuck compatibility
• Meets ASME B94.11M and DIN 340 standards

Compatibility

Rated for drilling alloy steel, carbon steel, and cast iron. Straight shank design fits standard drill chucks accepting 9/32-inch or equivalent shank diameters. Suitable for use in drill presses, machining centers, and portable power drills.

Installation Notes

Secure the shank fully in the chuck and verify concentricity before beginning a cut. Use cutting fluid appropriate for the workpiece material when drilling steel or cast iron to extend tool life and maintain hole tolerance. Inspect the cutting edge and web-thinned point before each use and replace the bit if chipping or excessive wear is present. Follow applicable shop safety standards and ensure the workpiece is properly fixtured before drilling.