Hertel C.402.0940 Jobber Drill Bit 9.40mm Hss Oxide

Product Description

The HERTEL C.402.0940 is a jobber-length twist drill bit ground from high speed steel (HSS) with an oxide finish for improved lubricity and corrosion resistance. It measures 9.40 mm (0.3701 inches) in diameter with an overall length of 127.00 mm (5.000 inches) and a flute length of 92.00 mm (3.622 inches). The 118-degree standard point angle is the conventional geometry for general-purpose drilling in a wide range of metallic materials. This is a two-flute, right-hand cutting, straight-shank drill intended for use in standard drill chucks and CNC or manual drilling equipment.

This drill bit is rated for general-purpose drilling in steel and cast iron and falls within the 9.00 mm to 10.00 mm diameter range class. It suits production shops, maintenance facilities, and field service professionals who need a reliable metric-diameter jobber drill for everyday metal removal tasks. The straight cylindrical shank is compatible with standard drill chucks without requiring a collet adapter. It ships as a single unit, making it practical for one-off replacement or low-volume replenishment.

Key Features

• 9.40 mm (0.3701 inch) diameter in the standard jobber-length format
• High speed steel construction with oxide coating for wear resistance and reduced friction
• 118-degree standard point angle for general-purpose metal drilling
• Right-hand, regular spiral two-flute geometry for efficient chip evacuation
• Straight cylindrical shank fits standard drill chucks without adapters
• No coolant-through feature — suitable for conventional flood, mist, or dry drilling setups

Compatibility

Designed as a general-purpose jobber drill for use in steel and cast iron applications; fits any standard drill chuck or collet system accepting a straight cylindrical shank in the 9.40 mm diameter range.

Installation Notes

Installation is performed by machinists, tool-and-die professionals, or maintenance technicians using standard drill press, lathe, or CNC equipment. Secure the shank fully in the chuck before operation and confirm runout is within acceptable limits for the application. Always wear appropriate eye and hand protection when drilling metal. Follow shop safety protocols and equipment manufacturer guidelines for spindle speed and feed rate selection based on workpiece material.