Cleveland C71290 Jobber Length Drill Bit 8.5 Mm Hss

Product Description

The CLEVELAND C71290 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and similar materials. Built from high speed steel with an oxide coating, it measures 8.5 mm (0.3346 inches) in diameter and has an overall length of 4.606 inches. The standard 118-degree split-point geometry and web-thinned tip reduce walking and cutting resistance at the start of each hole. Licensed tradespeople and machinists reach for this bit when a reliable, workhorse drill is needed for production or service work.

The C71290 belongs to Cleveland Series 2001G and is suited for general-purpose drilling applications in light manufacturing, maintenance, and trade-service environments. The straight-cylindrical shank fits standard three-jaw chucks on hand drills, drill presses, and CNC machines. Right-hand spiral flutes evacuate chips efficiently, keeping the cutting edge clear during through-hole and blind-hole operations. With a flute length of 2.953 inches, this bit handles material depths appropriate for jobber-length work without excessive deflection.

Key Features

• High speed steel construction with oxide finish for corrosion resistance and reduced friction
• 118-degree standard point angle with web thinning for fast, accurate hole starts
• Right-hand, regular spiral flute design promotes efficient chip evacuation
• Straight-cylindrical shank fits standard drill chucks without adapters
• Conforms to ASME B94.11M and DIN 338 standards for dimensional consistency
• Tapered web configuration maintains core strength through the full flute length

Compatibility

Designed as a general-purpose jobber-length drill bit in the 0.3000 to 0.3500 inch diameter range, compatible with any standard three-jaw chuck accepting a 0.3346-inch straight-cylindrical shank.

Installation Notes

Install in a properly sized drill chuck and tighten securely before operation. Ensure the workpiece is clamped or fixtured to prevent movement during drilling. Apply appropriate cutting fluid when drilling ferrous metals to extend tool life and improve finish quality. Follow shop safety practices and applicable OSHA guidelines when operating drilling equipment.