Chicago-latrobe 47239 Jobber Drill 1.80mm 118 Deg Hss

Product Description

The CHICAGO-LATROBE 47239 is a high speed steel jobber-length drill bit designed for general-purpose drilling in steel, cast iron, and similar ferrous materials. It carries a 118-degree standard point angle and a black oxide coating that reduces friction and provides light corrosion resistance during service. The bit measures 1.80 mm in diameter (0.0709 inches) with an overall length of 46.00 mm (1.811 inches). Two regular spiral flutes evacuate chips efficiently across the 22.00 mm (0.866 inch) flute length. A tapered web with web-thinning geometry reduces thrust load at the point. This drill is suited to machinists, maintenance technicians, and trade professionals working in metal fabrication or equipment service environments.

The 47239 is built for production and field use where consistent, repeatable hole quality in ferrous stock is required. Its straight cylindrical shank seats in standard drill chucks without additional tooling. The DIN 338 specification ensures dimensional conformance recognized across industrial and commercial applications. Typical use cases include drilling pilot holes, clearance holes, and through-holes in structural steel, mild steel plate, and gray cast iron components.

Key Features

• 1.80 mm diameter with tight tolerance of -0.0005 to 0.0000 inches for accurate hole sizing
• 118-degree standard point angle for self-centering entry on ferrous materials
• Black oxide coating reduces friction and provides light corrosion protection
• Web-thinned tapered web lowers drilling thrust and extends bit life
• Two regular spiral flutes for efficient chip evacuation
• DIN 338 compliant for dimensional consistency across interchangeable tooling programs

Compatibility

Designed as an OEM-style general-purpose jobber drill conforming to DIN 338 standards, compatible with any standard drill chuck accepting a straight cylindrical shank sized at 0.0709 inches. Rated for use in steel and cast iron workpiece materials.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trade technicians familiar with rotating cutting tools. Secure the straight shank fully in a properly sized drill chuck and verify chuck key removal before powering the machine. Always wear appropriate eye protection and secure the workpiece before drilling. Do not exceed the recommended speed range for the workpiece material and bit diameter.