Cleveland C71236 Jobber Length Drill Bit 3.1 Mm Hss

Product Description

The CLEVELAND C71236 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and plastic. Manufactured from high speed steel with an oxide coating, it delivers reliable performance in production and maintenance applications. The bit measures 3.1 mm (0.1220 inches) in diameter with an overall length of 2.559 inches and a standard 118-degree point angle. Web thinning at the tip reduces thrust force and improves starting accuracy. Two spiral flutes with a regular helix evacuate chips efficiently during through-hole and blind-hole drilling. Licensed HVAC technicians, machinists, and maintenance trades reach for this size when working with small-diameter fastener clearance holes and pilot bores.

The C71236 suits residential and light commercial maintenance work, fabrication shops, and field service applications where consistent, small-diameter hole quality is required. Its straight-cylindrical shank seats directly in standard three-jaw chucks on handheld drills, drill presses, and CNC lathes or mills with appropriate collet adapters. The 1.417-inch flute length provides adequate chip clearance for material thicknesses common in sheet metal and light structural work. This bit is sold individually but requires a minimum order quantity of 12 units.

Key Features

• High speed steel construction with oxide coating for corrosion resistance and lubricity
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• 3.1 mm (0.1220 inch) diameter with tight diameter tolerance of -0.0005 to 0.0000 inches
• 2.559-inch overall length with 1.417-inch spiral flute length for effective chip evacuation
• Right-hand cut, regular spiral flute pattern suited to general-purpose materials
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• Meets ASME B94.11M and DIN 338 standards

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard three-jaw chuck or collet system accepting a 0.1220-inch straight-cylindrical shank, conforming to DIN 338 and ASME B94.11M specifications.

Installation Notes

Secure the shank fully in the chuck and verify concentricity before operation. Power down and lock out any drill press or machine tool before changing bits. Use cutting fluid when drilling ferrous metals to extend tool life and maintain hole quality. Do not exceed the rated speed range for the workpiece material and bit diameter.