Hertel C.402.0340 Jobber Drill Bit 3.40mm Hss

Product Description

The HERTEL C.402.0340 is a high speed steel jobber-length drill bit designed for general-purpose drilling in metal, wood, and similar materials. It measures 3.40 mm (0.1339 inches) in diameter with a 118-degree standard point angle and an overall length of 73.00 mm (2.87 inches). The bit features a spiral flute with a right-hand cutting direction and a straight-cylindrical shank for use in standard drill chucks. An oxide coating provides a degree of lubricity and mild corrosion resistance during cutting operations. Machinists, maintenance technicians, and fabricators reach for this size when close-tolerance, small-diameter holes are required.

This jobber drill is suited for light-to-medium duty drilling in production and maintenance environments. The 44.00 mm (1.73 inch) flute length provides adequate chip clearance for typical through-hole and blind-hole applications in its diameter class. It is sold individually and falls within the 3.00 mm to 4.00 mm drill bit size range, making it a standard stock item for tool cribs and shop floors requiring precise small-diameter drilling.

Key Features

• 3.40 mm (0.1339 inch) diameter with 118-degree standard point for general-purpose use
• High speed steel construction for durability across a range of common workpiece materials
• Oxide coating for added lubricity and mild corrosion resistance
• Spiral flute with right-hand cutting direction for conventional drill press and hand-drill use
• Straight-cylindrical shank fits standard 3-jaw drill chucks without an adapter
• 73.00 mm overall length with 44.00 mm flute length for balanced reach and chip clearance

Compatibility

Designed as a general-purpose replacement or stock jobber drill for applications requiring a 3.40 mm straight-shank drill bit; fits any standard drill chuck accepting straight-cylindrical shanks in this diameter range.

Installation Notes

Install this bit in a properly sized drill chuck and tighten securely before operation. Ensure the drill press or hand drill is powered off and locked out before changing bits. Use appropriate cutting fluid or lubrication when drilling ferrous metals to extend tool life. Inspect the cutting edges for wear or chipping before each use and replace if the point is dull or damaged.