Chicago-latrobe 47303 Jobber Drill Bit 6.70mm Hss

Product Description

The CHICAGO-LATROBE 47303 is a high speed steel jobber-length drill bit designed for general-purpose drilling in steel and cast iron. It measures 6.70 mm (0.2638 inches) in diameter with an overall length of 101.00 mm (3.98 inches). The 118-degree standard point angle suits the widest range of production and maintenance drilling applications. A black oxide finish reduces friction and provides light corrosion resistance during storage and use. The web-thinned, tapered web geometry reduces thrust at the point and helps with penetration in harder ferrous materials. This bit is sold individually and is appropriate for use by machinists, maintenance technicians, ironworkers, and fabricators.

This drill bit is suited for drilling steel and cast iron in both shop and field environments. Common applications include maintenance and repair operations, metal fabrication, and general production drilling where a standard jobber-length bit is appropriate. The straight cylindrical shank fits standard drill chucks without adapters. It conforms to DIN 338, making it a recognized metric standard for jobber drills used in industrial and trade settings.

Key Features

• 6.70 mm (0.2638 inches) diameter with a diameter tolerance of -0.0010 to 0.0000 inches for close-tolerance hole sizing
• 118-degree standard point angle for general-purpose entry into steel and cast iron
• Black oxide coating reduces friction and provides light corrosion protection
• Web-thinned tapered web lowers drilling thrust and improves point penetration
• Right-hand cutting, regular spiral flute for efficient chip evacuation
• Conforms to DIN 338 specification for metric jobber drill standards

Compatibility

Designed as a general-purpose jobber drill for use in steel and cast iron workpieces. Fits any standard drill chuck accepting a 0.2638-inch (6.70 mm) straight cylindrical shank. Falls within the DIN 338 Series 150 metric drill range of 6.00 mm to 7.00 mm.

Installation Notes

Install the shank fully into a properly sized drill chuck and tighten securely before operation. Ensure the workpiece is clamped or fixtured to prevent movement during drilling. Use appropriate cutting fluid or lubricant when drilling steel to extend tool life and improve hole finish. Wear appropriate eye protection and follow applicable shop safety practices when operating drilling equipment.