Drilling through steel isn’t the same as working with wood or plastic—it demands power, precision, and the right tool for the job. If you’ve ever burned out a bit halfway through a project, you already know how frustrating the wrong choice can be. So, what should you look for? And more importantly, which models actually perform under pressure? That’s where this review of the best drills for steel comes in. We’ll break down top options that deliver torque, durability, and clean results every time. Along the way, you’ll also find insights on how these picks compare to the best drills for titanium and even the best drills for stainless steel, giving you a complete picture before you buy. Stick with us—because making the right choice now means smoother projects and longer-lasting tools.
Top pick
Best Pilot Point: DEWALT Titanium Nitride Coated Drill Bit Set
The DEWALT Titanium Nitride Coated Drill Bit Set DW1361 offers a 21-piece range with sizes from 1/16 to 1/2 inch, all stored in a tough plastic case. The titanium nitride coating extends bit life and improves cutting efficiency, while the pilot point design ensures clean starts without walking. The tapered web structure enhances strength and reduces the risk of breaking.
From a customer and expert perspective, this set stands out for general-purpose use on wood, plastic, and softer metals. While it is not suited for hardened steel or heavy industrial applications, it provides reliable performance for everyday tasks.
Overall, the DW1361 delivers strong value for homeowners and professionals seeking a versatile drill bit set with long-lasting durability and clean drilling results.
Best for Hard Metals: BOSCH CO14B 14-Piece Assorted Set with Included Case
The BOSCH CO14B 14-Piece Cobalt M42 Drill Bit Set is engineered for heavy-duty drilling in stainless steel, cast iron, titanium, aluminum, and light-gauge metal. Made with 8 percent cobalt alloy, these bits deliver up to ten times the life of standard bits. The thick web-helix design enhances stability under pressure, while the surface-hardened tip ensures penetration into abrasive or hardened materials without dulling quickly.
From the perspective of both experts and users, this set excels in demanding metal applications where heat resistance and durability are crucial. The three-flat shank design helps prevent spinning in the chuck, providing better control during drilling.
Overall, the CO14B offers excellent performance and durability, making it a top choice for professionals or serious DIY users who frequently work with tough metals and need a set that can handle repeated heavy use.
Best for Hardened Steel: Crosstar M35 Cobalt Drill Bit Set
The Crosstar M35 Cobalt Drill Bit Set delivers 21 pieces ranging from 1/16 to 1/2 inch, crafted from premium M35 cobalt steel with 5 percent cobalt content for maximum hardness. The TiAlN coating improves heat resistance up to 1,100°F and extends lifespan compared to standard titanium coatings. Its precision pilot point and 135-degree split tip provide clean, accurate starts while reducing walking, making it effective for automotive, HVAC, and fabrication work.
From a user and expert standpoint, this set excels at drilling into hardened steel, stainless steel, and cast iron where conventional bits often fail. The spiral flute design enhances chip removal, and the durable storage case improves usability in professional settings.
Overall, the Crosstar M35 set offers strong value for those needing a reliable, heavy-duty solution. It balances precision, durability, and performance, making it well-suited for professionals and serious DIYers tackling demanding metal projects.
FAQs
What is the best tool to drill through steel?
The best tool for drilling through steel is a high-quality power drill paired with the right type of drill bit. A corded drill often provides more consistent torque, making it ideal for thick or hardened steel. However, modern cordless drills with high voltage batteries can also deliver enough power for most applications. The key is using a drill with variable speed control, so you can start slowly and avoid overheating the bit. Pairing the drill with a cobalt or titanium-coated bit ensures clean, precise holes.
What is the best drill set for steel?
When choosing a drill set for steel, look for sets that include cobalt M35 or M42 drill bits. These are heat-resistant, durable, and designed to cut through hard metals without dulling quickly. A great example is a set that offers multiple bit sizes with a sturdy case, allowing you to tackle different projects without searching for replacements. Brands like DEWALT, Bosch, and Irwin are well-regarded for producing long-lasting sets specifically made for steel.
What kind of drill is used for steel?
Both corded and cordless drills can handle steel, but the type depends on your needs. Corded drills are excellent for heavy-duty, continuous work since they provide steady power without battery limitations. On the other hand, cordless drills are more convenient for mobility and smaller jobs. Whichever you choose, make sure it has enough torque and adjustable speed settings, since steel requires slower drilling speeds to prevent overheating and prolong bit life.
What is the toughest drill bit for steel?
Cobalt drill bits are widely considered the toughest choice for steel. Unlike regular high-speed steel (HSS) bits, cobalt bits contain a percentage of cobalt alloy—usually 5% (M35) or 8% (M42)—which significantly boosts hardness and heat resistance. This makes them ideal for drilling through stainless steel, cast iron, and other tough metals. They hold their edge longer and are less likely to chip or dull under extreme conditions, making them the go-to option for professionals working with steel regularly.
Conclusion
When it comes to tackling steel, not every drill is built to deliver the same results. The best drills for steel combine power, torque, and precise speed control with durable bits that can withstand heat and pressure. Whether you’re working on a heavy-duty fabrication project or handling smaller DIY tasks, investing in the right tool ensures cleaner holes, less wear on your bits, and a longer lifespan for your equipment. By matching a reliable drill with the proper cobalt or titanium-coated bits, you’ll save time, reduce frustration, and achieve professional-grade results. In the end, choosing wisely isn’t just about convenience—it’s about making sure every project with steel is done efficiently and effectively.
