Introducing the Diablo Metal Demon 21/64 in. x 4.6 in. L Metal Drill Bit with a 3-Flat Shank—the punchy, rugged solution you need for demanding metalworking projects. This drill bit, part of the Metal Demon line, is built to deliver steady performance when drilling through metal, delivering clean, accurate holes you can rely on time after time.
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Precise sizing for metal work – 21/64 in. (0.328") diameter ensures hole accuracy in steel, aluminum, and other metals, making it ideal for fasteners, fittings, and precise fabrication tasks.
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Optimal reach and chip clearing – 4.6" overall length with a 3" flute length provides ample reach for thicker materials and efficient debris evacuation, reducing stalling and heat buildup.
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Secure 3-flat shank – the 3-flat shank offers improved chuck grip and reduced bit slippage under high torque, delivering consistent drilling alignment and control.
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Durable metal construction – designed for repeated use in metalworking environments, this bulk-packaged drill bit is built to endure tough jobs without sacrificing performance.
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Versatile metal drilling capability – a reliable choice for drilling through mild steel, aluminum extrusions, steel plates, and other common metalwork scenarios.
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Single-piece practicality – packaged as a single drill bit, ready to add to your toolkit or job-site supply without unnecessary bulk.
Why choose the Diablo Metal Demon drill bit? Its specialized 3-flat shank and purpose-built dimensions are tailored for metal drilling where precision and grip matter most. This isn’t just a generic bit—it’s a dedicated tool designed to deliver accurate holes, cleaner cuts, and longer bit life in real-world metalworking tasks.
Pro tips for best results: lubricate or use cutting oil to reduce heat, start with a pilot hole for thick metals, and maintain steady feed pressure to maximize bit life. Pair it with a compatible drill and a quality chuck to fully leverage the 3-flat shank’s torque stability. When you need reliable, purpose-driven metal drilling performance, the Diablo Metal Demon bit is ready to work.