Chicago-latrobe 42024 3/8 Inch Jobber Drill Bit Ticn Hss

Product Description

The CHICAGO-LATROBE 42024 is a jobber-length twist drill bit engineered for heavy-duty drilling in steel and other ferrous materials. Built from M7 high speed steel with a TiCN (Titanium Carbonitride) coating, this bit runs harder and longer between sharpenings than standard uncoated HSS tooling. The 135-degree notched split point starts on contact without a center punch, reducing walking on flat or curved surfaces. At 5 inches overall length with a 3-5/8-inch flute, it fits standard drill chucks and drill presses used in fabrication, mechanical, plumbing rough-in, and HVAC sheet metal work.

This bit is suited for production and maintenance drilling in steel, cast iron, and similar ferrous workpiece materials. The parabolic flute geometry clears chips aggressively, making it effective in deeper holes where standard flutes pack and bind. The straight cylindrical shank at 3/8 inch diameter seats securely in keyed or keyless chucks. Series 150WLPN is a heavy-duty general-purpose jobber series intended for shop, field, and service truck use by machinists, pipefitters, electricians, and HVAC technicians who drill metal regularly.

Key Features

• M7 high speed steel construction for heavy-duty service life in ferrous materials
• TiCN coating increases surface hardness and reduces friction for extended tool life
• 135-degree notched split point eliminates walking and reduces thrust force at start
• Parabolic flute design clears chips efficiently in deeper holes
• Web-thinned tapered web reduces cutting resistance through the full depth
• Right-hand cut, straight cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed for use in standard 3/8-inch capacity or larger drill chucks on portable drills, drill presses, and milling machines. Diameter tolerance of -0.0010 to 0.0000 inches ensures consistent fit in jigs and fixtures requiring close-tolerance holes in steel workpieces.

Installation Notes

Secure the shank fully in the chuck before operation and verify chuck key is removed before starting the tool. Use appropriate cutting fluid or lubricant when drilling steel to extend bit life and maintain hole quality. Wear eye protection and secure the workpiece to prevent rotation. Inspect the cutting edges before each use and replace or resharpen if chipping or excessive wear is observed.