The Diablo Metal Demon 25/64 in. x 5.2 in. L Drill Bit with a 3-Flat Shank is built for serious metalworking. From the trusted Metal Demon family, this single drill bit delivers consistent performance in steel, aluminum, and other metals, making it a dependable choice for shop projects, automotive work, and fabrication tasks.
Key features that matter in real projects
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Diameter: 25/64 in (approximately 0.39 in) for precision holes in metal stock.
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Overall length: 5.2 in with a flute length of 3.4 in, providing both reach and efficient chip evacuation.
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Shank type: 3-Flat Shank for a secure, slip-resistant grip in drill chucks and impact drivers.
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Material: Metal construction designed to withstand repeated metal drilling without rapid wear.
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Brand: Diablo, under the Metal Demon line, built for demanding metalworking environments.
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Packaging: Sold as a single piece in bulk packaging—ready to drop into your next project.
Why this drill bit shines in metal drilling
Metal drilling demands stability and efficient heat management. The 3-flat shank minimizes slippage under high torque, helping you maintain accurate hole location and smoother feeds. The 3.4" flute length supports steady chip removal, reducing clogging and heat buildup that can dull bits. With a durable metal construction, this Diablo bit is designed to stand up to frequent use in busy workshops and fabrication settings.
Ideal use cases
- Drilling through steel plates, brackets, and automotive panels where a longer reach is advantageous.
- Creating precise holes in aluminum extrusions or fabrications without wandering.
- Fabrication shop projects, DIY metalworking, and automotive repair that require dependable performance with metal stock.
Practical tips for best results
- Apply a light coat of cutting oil or lubricant to reduce heat, extend bit life, and improve hole quality.
- Use a slow-to-moderate drill speed appropriate for metal; start with a pilot hole if working with thick stock.
- Keep chips clear by backing off slightly as needed to prevent binding and overheating.
- Secure your workpiece firmly and consider a drill press for consistent, perpendicular holes when precision is critical.
Who this is for
Professionals in metal fabrication, machinists, automotive technicians, and serious DIYers who need a reliable, long-reach drill bit that grips securely and delivers clean, accurate holes in metal. If you value consistent performance, reduced bit wobble, and a durable build, this Diablo Metal Demon bit is a strong addition to your toolkit.
What you get
1 x Diablo Metal Demon 25/64 in. x 5.2 in. L Drill Bit with a 3-Flat Shank
