Chicago-latrobe 52438 Reduced Shank Drill Bit 19/32 in

Product Description

The CHICAGO-LATROBE 52438 is a reduced shank drill bit designed for general-purpose portable drilling in metal, wood, and cast iron. It features a 19/32-inch cutting diameter (0.5938 inches decimal) with a 1/2-inch Weldon shank, allowing it to seat securely in standard 1/2-inch chucks and drill motors. The 118-degree split point geometry promotes accurate starting without center-punching and reduces walking on flat stock. Constructed from high speed steel with a coated finish, this bit handles the cutting heat and abrasion typical in production and field drilling tasks. Licensed electricians, pipefitters, ironworkers, and general maintenance technicians commonly reach for this size when drilling knockouts, conduit holes, and clearance holes through structural members.

The 52438 is built around the Series 190F platform, a general-purpose reduced shank line suited for portable drill applications. The 1/2-inch Weldon shank with three flats prevents rotation under load, which matters when drilling through alloy steel, carbon steel, or cast iron. At 6 inches overall length with a 3-1/8-inch flute length, it clears chips efficiently in moderate-depth holes without excessive deflection. Primary listed workpiece material is wood, with secondary materials including alloy steel, carbon steel, and cast iron, making it a versatile choice across trade applications where one bit needs to handle mixed-material structures.

Key Features

• 19/32-inch cutting diameter (0.5938 inches decimal) with tight tolerance of +0.0000 to -0.0012 inches
• 118-degree split point reduces walking and improves bite on flat and curved surfaces
• Weldon shank with 3 flats locks against chuck rotation under high-torque portable drilling
• High speed steel construction with coated finish for heat and wear resistance
• Right-hand spiral flute geometry promotes consistent chip evacuation
• Reduced shank design allows 19/32-inch cutting diameter in a standard 1/2-inch chuck

Compatibility

Designed as an OEM-style replacement or direct-use bit compatible with standard 1/2-inch Weldon-style chucks and portable drill motors used across HVAC, electrical, plumbing, and general construction trades.

Installation Notes

Installation and use should be performed by qualified tradespeople familiar with portable drilling equipment and appropriate PPE requirements. Secure the Weldon shank fully into the chuck and verify all flat-engagement set screws are tightened before operation. Power down and disconnect the drill from its power source before changing bits. Do not exceed the drill motor manufacturer's rated RPM for this bit diameter, and use appropriate cutting fluid when drilling through hardened alloy or cast iron stock to extend bit life.