Hertel C.402.1180 Jobber Drill Bit 11.80mm Hss

Product Description

The HERTEL C.402.1180 is a high speed steel jobber-length drill bit ground to an 11.80 mm (0.4646 inch) diameter with a standard 118-degree point angle. It carries a black oxide coating that provides light lubricity and corrosion resistance during general-purpose drilling operations. At 143 mm overall length with a 106 mm flute length, this bit fits standard drill chucks via its straight-cylindrical shank. The two-flute spiral geometry evacuates chips efficiently in a right-hand cutting direction. Machinists, maintenance technicians, and tool-and-die professionals reach for this size when drilling through mild steel, cast iron, aluminum, and similar materials in production or job-shop environments.

This jobber drill is suited for general-purpose metal drilling on drill presses, CNC machining centers, or hand-held power drills equipped with a suitable chuck. Its straight-cylindrical shank seats directly into standard Jacobs-style chucks or collet holders without adapters. The 0.4646 inch decimal equivalent places this bit in the 0.4000 to 0.5000 inch size range, making it a common choice for clearance holes, through-holes, and pre-drill operations before reaming or tapping in ferrous and non-ferrous workpieces.

Key Features

• 11.80 mm (0.4646 inch) diameter with 118-degree standard point for general-purpose entry in a wide range of materials
• High speed steel construction for durability across metal-cutting applications
• Black oxide coating reduces friction and provides mild corrosion resistance
• Two-flute right-hand spiral geometry promotes efficient chip evacuation
• Straight-cylindrical shank for direct chuck or collet mounting without adapters
• 143 mm overall length with 106 mm flute length suits typical jobber-length drilling depths

Compatibility

Designed as a general-purpose jobber-length drill bit fitting any standard drill chuck or collet system accepting a straight-cylindrical shank in the 0.4000 to 0.5000 inch diameter range.

Installation Notes

A licensed machinist or qualified maintenance technician should secure the shank fully in a properly sized chuck or collet before operation. Ensure the drill press or machine spindle is powered down and locked out before changing bits. Use appropriate cutting fluid or cutting oil when drilling ferrous metals to extend tool life and improve hole quality. Verify workpiece clamping before starting the cut to prevent workpiece movement or bit breakage.