Chicago-latrobe 47325 Jobber Drill Bit 8.50mm Hss

Product Description

The CHICAGO-LATROBE 47325 is a high speed steel jobber-length drill bit designed for general-purpose drilling in steel and cast iron. It measures 8.50 mm (0.3346 inches) in diameter with a 118-degree standard point angle and a black oxide coating that provides corrosion resistance and reduces friction during cutting. The overall length is 117.00 mm (4.6063 inches). A web-thinned, tapered-web construction reduces thrust at entry, making it well suited for production and maintenance drilling tasks performed by machinists, tool-and-die tradespeople, and industrial maintenance technicians.

This bit is appropriate for drilling ferrous workpiece materials including steel and cast iron in both shop and field maintenance environments. The right-hand, regular spiral flute geometry promotes chip evacuation in through-hole and blind-hole applications. The straight cylindrical shank seats in standard Jacobs-style chucks and drill press spindles without adapters. It conforms to DIN 338 standards, making it a direct fit for European-spec tooling setups as well as domestic applications.

Key Features

• 8.50 mm diameter with 0.3346-inch decimal equivalent for cross-reference with inch-based print dimensions
• 118-degree standard point angle for general-purpose entry on steel and cast iron
• Black oxide coating reduces friction and provides light corrosion protection
• Web-thinned tapered web lowers drilling thrust and improves chisel-edge cutting action
• Two-flute regular spiral geometry supports reliable chip clearance
• Conforms to DIN 338 for consistent dimensional accuracy across series production

Compatibility

Designed as a general-purpose replacement or stock jobber drill bit for use in standard drill presses, handheld power drills, and CNC drilling operations where an 8.50 mm straight-shank HSS bit conforming to DIN 338 is specified.

Installation Notes

This bit is installed by machinists or maintenance technicians using a standard drill press, mill, or portable drill with a compatible chuck capacity. Ensure the chuck and spindle are fully stopped and de-energized before inserting or removing the bit. Use appropriate cutting fluid or coolant when drilling ferrous materials to extend tool life, even though this bit does not support through-coolant delivery. Inspect the cutting edges and point for wear before each use and replace when the bit shows signs of heat discoloration or chipping.