Cleveland C71249 Jobber Drill Bit 4.4mm Hss 118 Degree

Product Description

The CLEVELAND C71249 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and composite materials. Built from high speed steel with an oxide coating for improved lubricity and heat resistance, this bit features a 118-degree standard point angle and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation at the start of a cut. The straight-cylindrical shank measures 0.1732 inches in diameter, making it compatible with standard drill chucks. At 3.15 inches overall length with a 1.85-inch flute, it fits the classic jobber-length profile that machinists and maintenance technicians rely on for everyday drilling tasks.

This bit suits production shops, MRO operations, and trade professionals who need a reliable general-purpose drill in the 4.40 mm (0.1732-inch) range. It conforms to ASME B94.11M and DIN 338 standards, placing it in the 4.00 to 5.00 mm diameter class. Typical applications include drilling pilot holes, clearance holes, and through-holes in mild steel, aluminum, and similar materials. The two-flute, right-hand spiral configuration works with standard drill presses, handheld drills, and CNC setups running conventional twist-drill toolpaths.

Key Features

• High speed steel construction with oxide coating for heat and wear resistance
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• Right-hand cut, regular spiral, two-flute design promotes efficient chip clearing
• Straight-cylindrical shank fits standard drill chucks without adapters
• Meets ASME B94.11M and DIN 338 specifications for consistent dimensional accuracy
• Diameter tolerance held to -0.0007 to 0.0000 inches for precise hole sizing

Compatibility

Designed as a general-purpose jobber-length drill bit conforming to DIN 338 and ASME B94.11M standards, suitable for use in standard three-jaw drill chucks accepting a 0.1732-inch straight-cylindrical shank.

Installation Notes

Secure the shank firmly in the drill chuck before operation and verify chuck key is removed before powering the tool. Use appropriate cutting fluid or coolant when drilling ferrous metals to extend bit life and maintain dimensional accuracy. Reduce feed pressure as the point breaks through the workpiece to prevent bit grab or workpiece movement. Always wear appropriate eye protection and secure the workpiece properly before drilling.