Chicago-latrobe 56328 Reduced Shank Drill Bit 7/16 in

Product Description

The CHICAGO-LATROBE 56328 is a reduced shank twist drill bit designed for portable drilling applications across metal fabrication, woodworking, and sheet metal work. The bit features a 7/16 inch cutting diameter with a reduced 1/4 inch straight-cylindrical shank, allowing it to be used in smaller chuck sizes and standard portable drills. Constructed from high speed steel with a coated finish, it delivers consistent performance on general-purpose drilling tasks. The 118-degree standard point angle suits a wide range of common workpiece materials and makes for straightforward point-to-center engagement without requiring a pilot hole in most applications.

This drill bit is suited for contractors, electricians, plumbers, HVAC technicians, and general trade professionals who need to drill through aluminum, mild steel, sheet metal, or wood in the field. The reduced shank design is particularly useful when the full 7/16 inch diameter exceeds the chuck capacity of a portable drill or right-angle drill tool. The Series 239 designation places this bit in a general-purpose product line built for everyday job-site use rather than high-speed production environments.

Key Features

• 7/16 inch cutting diameter with reduced 1/4 inch shank for use in standard portable drill chucks
• High speed steel construction provides durability across aluminum, mild steel, sheet metal, and wood
• 118-degree standard point angle for general-purpose drilling without a pilot hole
• Right-hand cut with regular spiral fluting and 2 flutes for efficient chip evacuation
• Coated finish helps extend tool life and reduces friction during cutting
• Diameter tolerance of +0.0000 to -0.0010 inches ensures consistent hole sizing

Compatibility

Designed as a general-purpose replacement or job-site drill bit compatible with any portable drill accepting a 1/4 inch straight-cylindrical shank. Rated for use on aluminum, mild steel, sheet metal, and wood workpieces.

Installation Notes

Installation of this bit requires a portable drill or drill press with a chuck that accepts a 1/4 inch straight shank. Secure the shank fully in the chuck before operation to prevent slippage under torque. When drilling metal workpieces, use appropriate cutting fluid or lubricant where conditions allow to extend bit life. Always wear appropriate eye protection and secure the workpiece before drilling.