Hertel 79891776 Solid Carbide Jobber Drill Bit 3/64 in

Product Description

The HERTEL 79891776 is a solid carbide jobber-length drill bit designed for precision drilling in hard and abrasive materials. At 3/64 inch (0.0469 inch decimal) in diameter with a 118-degree standard point angle, it is built for tight-tolerance work where tool rigidity and dimensional accuracy are critical. The bright finish coating maintains a close diameter tolerance of -0.0005 to 0.0000 inches, making it suitable for applications that demand consistent hole quality. Machinists and tool-and-die professionals working with small-diameter holes in ferrous and non-ferrous materials will find this bit appropriate for high-performance production environments.

This bit is suited for use in CNC machining centers, drill presses, and hand-held drilling equipment capable of handling small-diameter solid carbide tooling. The jobber-length format and straight cylindrical shank make it compatible with standard collet chucks and Jacobs-style chuck systems. Its web-thinned, tapered web construction reduces thrust requirements at entry and supports cleaner hole initiation on hard substrates.

Key Features

• Solid carbide construction rated at material grade C2 for hardness and wear resistance
• 118-degree standard point angle with web-thinned tapered web for reduced thrust at entry
• Bright finish coating with tight diameter tolerance of -0.0005 to 0.0000 inches
• Right-hand cut with regular spiral fluting for efficient chip evacuation
• Straight cylindrical shank for use in standard collet and Jacobs chuck systems
• 2-flute configuration optimized for small-diameter drilling performance

Compatibility

Designed as a high-performance jobber-length drill bit for use in standard drilling applications requiring a 3/64 inch diameter solid carbide tool with a straight cylindrical shank.

Installation Notes

Installation and use should be performed by qualified machinists or tradespeople familiar with small-diameter carbide tooling. Always secure the workpiece and verify spindle speed and feed rate compatibility with solid carbide tooling before drilling. Carbide is brittle — avoid side loading, interrupted cuts without proper setup, and excessive runout that can fracture the bit. Inspect the shank and cutting edges before each use and replace if chipping or wear is present.