Chicago-latrobe 55464 Reduced Shank Drill Bit 1 in Hss

Product Description

The CHICAGO-LATROBE 55464 is a reduced shank twist drill bit designed for portable drilling applications across a range of materials. The bit features a 1 inch cutting diameter with a 1/2 inch straight-cylindrical shank, allowing it to be chucked in standard 1/2 inch drill chucks without requiring a large-capacity machine. Manufactured from high speed steel with a coated finish, the 55464 is built for general-purpose use in wood, carbon steel, alloy steel, and cast iron. A standard 118-degree point angle provides a conventional entry geometry suited to a wide variety of workpiece materials encountered in trade and light industrial settings.

This bit is sized for portable drilling tasks where a full-size 1 inch shank is impractical. The reduced shank design makes it compatible with 1/2 inch portable drill chucks and benchtop drill presses commonly used by contractors, maintenance technicians, and fabricators. Primary workpiece materials include wood and metal, with secondary compatibility covering alloy steel, carbon steel, cast iron, and wood. The Series 190 designation places this bit in a general-purpose product family intended for everyday production and maintenance drilling work.

Key Features

• 1 inch cutting diameter with 1/2 inch reduced shank for use in standard 1/2 inch chucks
• High speed steel construction for durability across metal and wood workpieces
• 118-degree standard point angle suitable for general-purpose entry into multiple materials
• Coated finish for surface protection and extended service life
• Right-hand cut with regular spiral fluting and 2 flutes for efficient chip evacuation
• 3-1/8 inch flute length and 6 inch overall length accommodate moderate-depth drilling tasks

Compatibility

Designed as a general-purpose reduced shank drill bit compatible with 1/2 inch portable drill chucks and benchtop drill presses. Suitable for drilling wood, alloy steel, carbon steel, and cast iron workpieces in maintenance and light fabrication applications.

Installation Notes

Installation is performed by machinists, maintenance technicians, and general tradespeople using standard 1/2 inch keyed or keyless drill chucks. Ensure the chuck is fully tightened and the workpiece is secured before beginning any drilling operation. Appropriate cutting fluid or lubricant is recommended when drilling metals to reduce heat buildup, though this bit is rated for dry use. Inspect the bit for wear or chipping before each use and replace when point geometry is no longer consistent.