Chicago-latrobe 50823 Cobalt Screw Machine Drill Bit 13/32

Product Description

The CHICAGO-LATROBE 50823 is a cobalt screw machine length drill bit designed for heavy-duty drilling in ferrous metals, cast iron, and steel. At 13/32 inch (0.4062 inches) in diameter, it features a 135-degree split point that reduces walking and requires no center punch on most surfaces. The spiral flute design promotes chip evacuation, and the web-thinned, parallel-web construction lowers cutting resistance. This bit is built to Series 559 specifications with M42 cobalt material grade, giving it superior heat resistance compared to standard HSS tooling. It is suited for production environments where drill life and dimensional accuracy matter.

This bit is intended for screw machine operations and general-purpose drilling in machine shops, fabrication facilities, and maintenance environments. The straight-cylindrical shank fits standard drill chucks without adapters. Primary workpiece materials include cast iron and steel, making it appropriate for structural, mechanical, and industrial applications. The right-hand cut and regular spiral flute configuration are standard for conventional drill press, lathe, and CNC turret setups. Diameter tolerance is held to +0.0000 to -0.0010 inches, supporting close-tolerance hole production.

Key Features

• M42 cobalt construction handles elevated cutting temperatures in hard and abrasive metals
• 135-degree split point reduces thrust force and eliminates center-punch requirements on most workpieces
• Web-thinned, parallel-web design lowers cutting resistance and extends tool life
• Straight-cylindrical shank fits standard drill chucks with no adapter needed
• Diameter tolerance of +0.0000 to -0.0010 inches supports close-tolerance hole production
• ISO standards compliance for dimensional consistency across production runs

Compatibility

Designed as a direct-fit screw machine length drill bit for any standard drill chuck accepting a straight-cylindrical shank; primary workpiece materials are cast iron and steel as specified by the manufacturer.

Installation Notes

Install and remove this bit with the machine fully powered down and the chuck key removed from the area before startup. Secure the shank fully into the chuck jaws to the recommended engagement depth to prevent pullout under load. Use appropriate cutting fluid or coolant on hard steel and cast iron to maximize tool life, noting that this bit does not support coolant-through delivery. Inspect the cutting edges and point before each use and replace if chipping or dulling is observed.