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The EAGLE CUTTING TOOL C1090-034-I is a 17/32-inch cobalt screw machine (stub length) drill bit with a 1/2-inch reduced shank. Cobalt construction provides increased heat resistance and edge retention compared to standard high-speed steel, making this bit suited for drilling hard and abrasive materials including stainless steel, cast iron, hardened alloys, and other tough metals. The stub-length body offers added rigidity and reduced deflection in demanding production and maintenance drilling applications. Licensed tradespeople and machinists install this type of bit in standard drill presses, magnetic drills, and hand-held power drills equipped with a 1/2-inch chuck.
This drill bit is appropriate for metalworking applications in industrial maintenance, fabrication shops, HVAC equipment manufacturing, and commercial construction environments where tight-tolerance holes are required in hard materials. The 1/2-inch shank allows the bit to seat securely in 1/2-inch chuck equipment, extending its usability across a wide range of common drilling platforms. It is suited for both production runs and one-off maintenance tasks where standard HSS bits wear prematurely.
Designed as a standard screw machine stub-length drill bit compatible with any drill press, magnetic drill, or power drill equipped with a 1/2-inch or larger chuck capacity.
Secure the bit firmly in the chuck and verify no runout before drilling. Use appropriate cutting fluid or coolant when drilling hard ferrous materials to extend tool life and maintain hole quality. Always wear eye protection and ensure the workpiece is properly clamped before beginning the cut. Follow applicable workplace safety standards and tool manufacturer guidelines for speed and feed rates based on material type.
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