Hertel C.402.1070 Jobber Drill Bit 10.70 Mm Hss

Product Description

The HERTEL C.402.1070 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and composite materials. The bit measures 10.70 mm (0.4213 inches) in diameter with a standard 118-degree point angle that suits a wide range of workpiece materials. High speed steel (HSS) construction provides the hardness and heat resistance needed for production drilling. An oxide finish reduces friction and helps shed heat at the cutting edge. The 137 mm overall length and straight-cylindrical shank make it compatible with standard drill chucks on both handheld and machine-mounted spindles. Machinists, pipefitters, and maintenance technicians rely on this geometry for consistent, accurate hole sizing.

This jobber drill is suited for metalworking, fabrication, and maintenance repair operations (MRO) in industrial and commercial settings. The general-purpose grade and standard spiral flute geometry work well in drill presses, CNC machining centers, and handheld drill motors. Typical applications include through-hole drilling in mild steel, aluminum, copper, and plastic stock. The right-hand cutting direction is compatible with conventional right-hand spindle rotation found on virtually all standard drilling equipment.

Key Features

• 10.70 mm (0.4213 inch) diameter for precise hole sizing in the 0.4000 to 0.5000 inch range
• 118-degree standard point angle for general-purpose drilling across common materials
• High speed steel construction delivers hardness and thermal resistance during continuous use
• Oxide coating reduces friction and extends cutting life
• Straight-cylindrical shank fits standard three-jaw drill chucks without adapters
• Two-flute spiral design clears chips efficiently from the cutting zone

Compatibility

Designed as a general-purpose jobber drill compatible with standard drill chucks and spindles that accept straight-cylindrical shanks in the 10.70 mm diameter range.

Installation Notes

Installation and use should be performed by machinists or qualified trade professionals familiar with drilling equipment and safe operating procedures. Secure the workpiece firmly before drilling and confirm the drill chuck is tightened properly before spindle engagement. Use appropriate cutting fluid or coolant when drilling ferrous metals to reduce heat buildup at the cutting edge. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.