Hertel C.402.0950 Jobber Drill Bit 9.50 Mm Hss

Product Description

The HERTEL C.402.0950 is a jobber-length twist drill bit ground from high speed steel (HSS) with an oxide coating for added surface hardness and corrosion resistance. It cuts a 9.50 mm (0.3740 inch) diameter hole with a standard 118-degree point angle, making it a reliable choice for general-purpose drilling in a wide range of materials. The straight-cylindrical shank seats securely in standard drill chucks, and the right-hand spiral flute geometry evacuates chips efficiently throughout the cut. Overall length is 127 mm with a flute length of 92 mm. Machinists, maintenance mechanics, and fabricators reach for this bit when a versatile, everyday drill is needed for ferrous and non-ferrous metal, wood, or plastics.

This bit fits naturally into general-purpose metalworking, fabrication, and maintenance-repair-operations (MRO) environments. It is sized within the 9.00 mm to 10.00 mm range, covering the decimal-inch equivalent bracket of 0.3500 to 0.4000 inch. Typical applications include drilling clearance holes, pilot holes, and through-holes in mild steel, aluminum, and similar materials on drill presses, lathes, or hand-held power drills. The two-flute configuration suits a broad range of workpiece materials without special point geometry.

Key Features

• 9.50 mm (0.3740 inch) cutting diameter for general-purpose hole sizing
• 118-degree standard point angle for broad material compatibility
• High speed steel construction provides toughness and re-sharpenability
• Oxide coating reduces friction and improves corrosion resistance
• Right-hand, two-flute spiral geometry promotes efficient chip evacuation
• Straight-cylindrical shank fits standard three-jaw drill chucks without adapters

Compatibility

Designed as a general-purpose jobber drill compatible with any drill press, milling machine, or power drill equipped with a standard chuck accepting straight-cylindrical shanks in the 9.00 mm to 10.00 mm size range.

Installation Notes

Secure the shank fully into the chuck and confirm it is centered before beginning a cut. Use appropriate cutting fluid or lubricant when drilling ferrous metals to extend tool life and improve hole finish. Always wear eye protection and ensure the workpiece is clamped or fixtured before drilling. Inspect the cutting edges before each use and replace or resharpen the bit when point wear is evident.