Chicago-latrobe 53446 Cobalt Drill Bit 23/32 in 1/2 in Shank

Product Description

The CHICAGO-LATROBE 53446 is a reduced shank cobalt drill bit engineered for general-purpose portable drilling in ferrous metals and alloys. The bit measures 23/32 inches (0.7188 inches decimal) in cutting diameter with a 1/2-inch straight-cylindrical shank, allowing use in standard 1/2-inch chucks despite the larger cutting diameter. Overall length is 6 inches with a 3-1/8-inch flute length. The 118-degree split point promotes accurate entry and reduces walking on contact. Tool material is cobalt, which provides heat resistance during prolonged cuts in hard or abrasive materials. This bit is appropriate for licensed machinists, maintenance technicians, pipefitters, and HVAC service professionals who drill through steel, cast iron, and alloy materials in the field or shop.

The 53446 is suited for portable drilling operations on cast iron, carbon steel, alloy steel, and general ferrous stock. The reduced shank design makes this bit practical when working with a 1/2-inch chuck but needing to cut a hole larger than 1/2 inch without stepping up to a larger drill press or dedicated large-shank tooling. The right-hand spiral flute geometry clears chips efficiently during through-hole drilling. The coated finish provides additional surface protection. This bit fits common field and shop scenarios where a single portable drill is used for multiple hole sizes across structural or mechanical assemblies.

Key Features

• Cobalt tool material for heat resistance and durability in hard ferrous metals
• 118-degree split point for accurate starting and reduced thrust required
• Reduced shank at 1/2 inch allows use in standard 1/2-inch portable drill chucks
• Right-hand cut with regular spiral flute for efficient chip evacuation
• Diameter tolerance of +0.0000 to -0.0012 inches for consistent hole sizing
• Coated finish for added surface protection during general-purpose drilling

Compatibility

Designed for use with standard 1/2-inch chuck portable drills and drill presses. Primary workpiece materials are cast iron and steel. Secondary workpiece materials include alloy steel, carbon steel, and cast iron. Coolant is not required for typical general-purpose applications.

Installation Notes

Installation of this bit is performed by machinists, maintenance technicians, or trade professionals using portable electric drills or drill presses with a 1/2-inch chuck. Secure the shank fully in the chuck before operation and confirm the chuck key is removed before starting the tool. Wear appropriate eye protection and secure the workpiece to prevent movement during drilling. Do not exceed the rated capacity of the drill or chuck for the material being cut.