Hertel C.402.0660 Jobber Drill Bit 6.60 Mm Hss

Product Description

The HERTEL C.402.0660 is a high speed steel jobber-length drill bit ground to a 6.60 mm (0.2598 inch) diameter with a standard 118-degree point angle. The bit carries a black oxide coating that provides mild lubricity and corrosion resistance during general-purpose drilling operations. With a straight-cylindrical shank and right-hand spiral flute geometry, it seats securely in standard three-jaw drill chucks and is driven by most portable drills, drill presses, and CNC machining centers. At 105 mm overall length with a 73 mm flute length, it offers the extended reach typical of jobber-series tooling while maintaining stiffness in the cut.

This bit is suited for general-purpose drilling in mild steel, aluminum, brass, plastics, and wood in light manufacturing, maintenance, and fabrication settings. The two-flute spiral design clears chips effectively in both hand-fed and machine-fed applications. It falls within the 6.00 mm to 7.00 mm diameter range and the 0.2500 to 0.3000 decimal-inch size range, making it a common selection for through-hole and clearance-hole work in a wide variety of shop and field environments. Machinists, maintenance technicians, and fabricators reaching for a reliable general-purpose metric drill bit will find this size frequently specified on job travelers and repair orders.

Key Features

• 6.60 mm (0.2598 inch) diameter with a 118-degree standard point angle for broad material compatibility
• High speed steel construction provides toughness and resistance to heat buildup during general drilling
• Black oxide coating reduces friction and offers light corrosion protection in storage and use
• Right-hand two-flute spiral geometry promotes efficient chip evacuation
• Straight-cylindrical shank fits standard drill chucks without adapters
• 105 mm overall length with 73 mm flute length suits jobber-depth hole requirements

Compatibility

Designed as a general-purpose jobber drill bit for use in standard three-jaw drill chucks accepting straight-cylindrical shanks, compatible with portable drills, drill presses, and CNC drill heads operating in the 6.00 mm to 7.00 mm diameter range.

Installation Notes

A licensed machinist or qualified maintenance technician should verify chuck capacity and spindle speed before use. Secure the shank fully in the chuck and confirm runout is within acceptable limits before beginning a cut. Always wear appropriate eye protection and secure the workpiece before drilling. Follow applicable shop safety standards and machine manufacturer guidelines for feed rate and speed selection.