Chicago-latrobe 52484 Reduced Shank Drill Bit 1-5/16 in

Product Description

The CHICAGO-LATROBE 52484 is a reduced shank twist drill bit designed for portable drilling operations in metal, wood, and cast iron. Built from high speed steel with a coated finish, it features a 1-5/16 inch cutting diameter paired with a 1/2 inch Weldon shank, allowing it to run in standard 1/2 inch drill chucks while cutting oversize holes. The 118-degree standard point angle delivers clean entry across a range of workpiece materials. At 6 inches overall length with a 3-1/8 inch flute length, this bit suits both bench drilling and in-the-field portable applications. Installation and use is handled by machinists, pipefitters, ironworkers, and general tradespeople requiring larger-diameter bored holes without a full-size chuck.

The 52484 is suited for portable drilling in residential and commercial trade work. Compatible workpiece materials include wood, alloy steel, carbon steel, and cast iron. The Weldon shank with three flats resists bit slippage under torque, making it well matched for high-torque portable drills and right-angle drill applications common in plumbing rough-in, structural steel work, and HVAC duct framing. The right-hand spiral flute geometry clears chips efficiently during through-hole drilling.

Key Features

• 1-5/16 inch cutting diameter with diameter tolerance of +0.0000 to -0.0015 inches for consistent hole sizing
• Weldon shank with 3 flats prevents rotation in chuck under heavy torque loads
• 118-degree standard point angle for general-purpose entry across steel, cast iron, and wood
• High speed steel construction handles intermittent heat buildup in portable drilling scenarios
• Coated finish extends cutting edge life compared to uncoated HSS
• Right-hand spiral flute design promotes efficient chip evacuation during through-hole cuts

Compatibility

Designed for use in 1/2 inch Weldon-style drill chucks and compatible portable drilling equipment. Suitable for general-purpose drilling in wood, alloy steel, carbon steel, and cast iron workpieces.

Installation Notes

Secure the Weldon shank firmly in a compatible chuck, tightening set screws against the flats before operation. Always wear appropriate eye protection and secure the workpiece before drilling. Reduce feed pressure as the bit exits the workpiece to prevent grab or material tear-out. For steel applications, use appropriate cutting fluid where conditions allow to extend bit life.