Chicago-latrobe 42707 Jobber Drill Bit Wire 37 Tialn Hss

Product Description

The CHICAGO-LATROBE 42707 is a jobber-length drill bit designed for precision drilling in metal and other hard materials. Manufactured from high speed steel with a titanium aluminum nitride (TiAlN) coating, it delivers extended tool life and heat resistance under heavy-duty cutting conditions. The bit is sized at wire gauge 37, equal to 0.1040 inch, with a 135-degree split point for fast engagement and reduced walking on entry. A web-thinned, tapered web design reduces thrust requirements. This bit is installed and used by machinists, maintenance technicians, and trade professionals working in fabrication, HVAC equipment assembly, and general mechanical service.

The 42707 is suited for drilling through steel, stainless, and similar ferrous materials where a TiAlN coating provides a thermal barrier and hardness advantage over uncoated HSS tooling. With an overall length of 2.5 inches and a flute length of 1.4375 inches, it fits standard drill chucks with a straight-cylindrical shank. The regular spiral flute and right-hand cut make it compatible with conventional drill presses, hand drills, and CNC spindles running right-hand rotation. It meets NAS 907 specification requirements for jobber-length drill bits.

Key Features

• TiAlN coating for improved heat resistance and extended tool life in hard-material drilling
• 135-degree split point for reduced entry thrust and minimal bit walking
• Web-thinned tapered web lowers drilling force requirements
• Heavy-duty grade high speed steel construction rated for continuous production use
• Right-hand cut with regular spiral flute for efficient chip evacuation
• Meets NAS 907 specification for jobber-length drill bits

Compatibility

Designed as a jobber-length replacement drill bit for applications requiring a wire gauge 37 (0.1040 inch) hole diameter. Fits any standard drill chuck accepting a straight-cylindrical shank in the 0.1040-inch diameter range.

Installation Notes

Install in a properly sized drill chuck and verify the shank is fully seated before applying power. Always shut down and lock out the drill press or power tool before changing bits. Use cutting fluid appropriate to the workpiece material to manage heat when drilling ferrous metals. Follow applicable shop safety and machine-guarding requirements for rotating tooling.