Hertel C.402.0930 Jobber Drill 9.30mm Hss Oxide

Product Description

The HERTEL C.402.0930 is a high speed steel jobber-length drill bit designed for general-purpose drilling in metal, wood, and plastic. It features a 9.30 mm (0.3661 inch) diameter, a 118-degree standard point angle, and a black oxide coating that provides basic lubricity and corrosion resistance during use. The straight-cylindrical shank seats directly in standard drill chucks without adapters. With a two-flute spiral configuration and right-hand cutting direction, the bit evacuates chips efficiently during through-hole and blind-hole operations. Machinists, maintenance technicians, and fabricators reach for this size regularly in production and job-site settings.

This drill bit is suited for general-purpose drilling applications in light manufacturing, maintenance and repair, and fabrication shops. The 9.30 mm diameter falls within the 9.00 to 10.00 mm size range and is commonly used where a close metric size is required. The 127 mm overall length and 92 mm flute length are proportioned for stable, accurate drilling in standard drill presses, CNC machining centers, and hand-held power drills with compatible chucks. No coolant-through capability is present, so external cutting fluid or dry cutting is the standard approach.

Key Features

• 9.30 mm (0.3661 inch) diameter for precise metric-specification hole sizing
• 118-degree standard point angle for general-purpose entry on a wide range of materials
• High speed steel construction provides adequate heat resistance for typical drilling speeds
• Black oxide coating reduces friction and offers light corrosion resistance
• 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 standard drill chuck accepting a straight-cylindrical shank in the 9.30 mm diameter range, including bench drill presses, CNC machining centers, and portable power drills.

Installation Notes

Secure the shank fully in the drill chuck and verify concentricity before starting a cut. Power down and de-energize the machine before changing bits. Use appropriate cutting fluid or follow dry-drilling recommendations based on the workpiece material. Inspect the cutting edges for wear before each use and replace the bit when point geometry is degraded to avoid oversized or out-of-round holes.