Chicago-latrobe 55452 Reduced Shank Drill Bit 13/16 in Hss

Product Description

The CHICAGO-LATROBE 55452 is a reduced shank twist drill bit engineered for general-purpose portable drilling in wood, alloy steel, carbon steel, and cast iron. Built from high speed steel (HSS) with a coated finish, it offers a 13/16 inch (0.8125 inch decimal) cutting diameter paired with a 1/2 inch straight-cylindrical shank, allowing it to chuck into standard 1/2 inch drill chucks even at a larger cutting diameter. The 118-degree standard point angle suits a broad range of common workpiece materials. Overall length is 6 inches with a 3-1/8 inch flute length, keeping the bit compact while providing adequate chip clearance for typical depth requirements.

This bit is designed for portable drilling applications across residential, commercial, and light industrial settings. The reduced shank configuration makes it practical when a larger bore diameter is needed but only a 1/2 inch chuck is available — a common situation for field crews, maintenance technicians, and tradespeople working off cordless or corded drills rather than dedicated drill presses. Suitable workpiece materials include wood, alloy steel, carbon steel, and cast iron, making it a versatile single-bit solution for mixed-material job sites.

Key Features

• 13/16 inch cutting diameter with a reduced 1/2 inch straight-cylindrical shank for use in standard 1/2 inch chucks
• 118-degree standard point angle for general-purpose drilling across multiple materials
• High speed steel construction for durability in metal, wood, and cast iron
• Coated finish to reduce friction and extend cutting life
• Right-hand spiral flute design with 2 regular spiral flutes for efficient chip evacuation
• Diameter tolerance of +0.0000 to -0.0012 inches for consistent bore sizing

Compatibility

Designed as a general-purpose reduced shank drill bit suitable for use with any 1/2 inch chuck portable drill. Compatible workpiece materials include wood, alloy steel, carbon steel, and cast iron as stated by the manufacturer for Series 190.

Installation Notes

Insert the 1/2 inch shank fully into the chuck and tighten securely before drilling. Ensure the drill is powered off and the chuck is fully released before bit changes. When drilling metals, use appropriate cutting fluid or lubricant to manage heat buildup and extend bit life, even though this bit is rated for dry use. Follow applicable OSHA and site-safety guidelines for portable drilling operations, including securing the workpiece and wearing appropriate eye protection.