Chicago-latrobe 44410 Left Hand Jobber Drill Bit 5/32

Product Description

The CHICAGO-LATROBE 44410 is a jobber-length, left-hand spiral flute drill bit designed for general-purpose drilling in cast iron and steel. Built from high speed steel with a bright uncoated finish, it measures 5/32 inch (0.1562 inch) in diameter and runs 3-1/8 inches overall in length with a 2-inch flute length. The straight-cylindrical shank and web-thinned, tapered web geometry support clean entry and reduced thrust. This bit is part of the Series 150L lineup and is suited for machinists, pipefitters, and mechanical contractors who need a left-hand cutting bit for back-out work or drilling into fasteners with reversed rotation.

Left-hand drill bits are commonly used in maintenance and repair operations where the goal is to extract broken fasteners or bolts. As the drill advances under left-hand rotation, the cutting action can catch a loose fastener and back it out without additional extraction tools. The 44410 is appropriate for light-to-medium duty work on cast iron and steel in both shop and field environments. The 118-degree standard point angle suits general metal drilling across a range of workpiece thicknesses.

Key Features

• Left-hand cut spiral flute for reverse-rotation drilling and fastener extraction
• High speed steel construction for durability in cast iron and steel
• Bright uncoated finish with web-thinned tapered web for reduced thrust and cleaner starts
• Standard 118-degree drill point angle for general-purpose metal drilling
• Straight-cylindrical shank compatible with standard drill chucks
• Series 150L jobber-length format with 2-inch flute and 3-1/8-inch overall length

Compatibility

Designed as a general-purpose left-hand jobber drill bit for use in standard drill chucks accepting a 5/32-inch straight-cylindrical shank. Primary workpiece materials are cast iron and steel.

Installation Notes

Left-hand drill bits require a drill or drill press capable of reverse rotation. Secure the workpiece firmly before drilling to prevent movement during cut. Use appropriate cutting fluid for steel applications to extend bit life and improve hole quality. Eye protection and chip guards are standard practice when drilling metal.