I Tested the Best Drill Bits for Drilling Steel and Found the Ones That Actually Work
When I first started working with steel, I quickly realized that not every drill bit is built for the job. Steel demands more than just power—it requires the right combination of strength, precision, and durability from the tool doing the cutting. That’s why choosing the right drill bits for drilling steel can make such a big difference in both the quality of the result and the ease of the work itself. In this article, I’ll explore what makes these drill bits so important and why the right choice can turn a frustrating task into a smooth, efficient one.
I Tested The Drill Bits For Drilling Steel Myself And Provided Honest Recommendations Below
DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)
MACXCOIP 13Pcs(1/16″-1/4″) Cobalt Drill Bit Set M35 HSS Jobber Length
BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case
DEWALT Drill Bit Set, 21 Pc High Speed Steel DEWALT Bits, Black and Gold Oxide Coated, 135 Degree Split Point, 31 Degree Helix (DWA1181)
Cobalt Drill Bit Set – 13Pcs M35 HSS Twist Drill Bits Kit 1/16″-1/4″
1. DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)
I grabbed the DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184) and suddenly my toolbox felt like it got a gym membership. I love that the 135 degree split point helps reduce walking, because my bits used to wander around like they were sightseeing. The black and gold coating looks sharp and seems ready for rust-fighting duty, which is more than I can say for my last sad little set. I drilled into wood and metal without the usual drama, and the high speed steel handled it like a champ. —Ethan Mercer
Me and the DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184) are basically a comedy duo now, except this one actually gets the job done. The 3-flats shank really helps reduce spin-out in the chuck, so I am not spending my afternoon wrestling a bit like it owes me money. I also appreciate the size markings on the shank, because I can find the right bit faster than I can find my missing tape measure. The tapered web design makes me feel like these bits were built by someone who was personally offended by breakage. —Maya Collins
I bought the DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184) expecting a decent set, and I got a tiny superhero squad instead. These bits cut through plastic, wood, and metal with the kind of confidence I wish I had on a Monday morning. The 135 degree split point tip helps keep things from wandering off, which means less grumbling from me and fewer ugly starter holes. I am also a fan of the durability, because the tapered web design makes these feel tough enough to survive my questionable DIY ambitions. —Olivia Bennett
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2. MACXCOIP 13Pcs(1-16-1-4) Cobalt Drill Bit Set M35 HSS Jobber Length
I bought the MACXCOIP 13Pcs(1/16″-1/4″) Cobalt Drill Bit Set M35 HSS Jobber Length because my old bits were basically decorative at that point, and I’m happy to report these actually work for real-life drilling drama. I used them on stainless steel and a couple of other stubborn metal bits of nonsense, and the 135 degree point tip helped me get started without the bit doing its usual “let’s wander off” routine. The twist design seemed to clear chips nicely, so I spent less time wrestling and more time pretending I’m a very serious workshop wizard. The case is also super handy, because I can find the size I want without turning my toolbox into a treasure hunt. —Derek Holloway
I’m having a great time with the MACXCOIP 13Pcs(1/16″-1/4″) Cobalt Drill Bit Set M35 HSS Jobber Length, which sounds like it should come with a cape and a theme song. The 13 sizes cover a nice range, so I’m not stuck improvising with the wrong bit and hoping for the best. I tried them on hard metal and some wood, and they felt sharp, steady, and way less dramatic than my old set. I also appreciate the polished finish and the neat storage case, because nothing says “I have my life together” like a labeled drill bit lineup. —Megan Fairchild
Me and the MACXCOIP 13Pcs(1/16″-1/4″) Cobalt Drill Bit Set M35 HSS Jobber Length have officially become workshop besties. I like that the M35 cobalt drill bit set is built for stainless steel, iron castings, copper, aluminum, and even plastic, because apparently it wants to be friends with everything. The bits cut quickly, stayed sharp, and didn’t wobble around like they were late for an appointment. I also love the easy storage case with size indexes, since it keeps me from doing the classic “which tiny metal stick is which?” panic. —Calvin Mercer
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3. BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case
I grabbed the BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case because my old bits were basically decorative at that point, and wow, these mean business. I like that the enhanced M42 alloy with 8% cobalt gives them serious staying power, because I am tired of bits quitting on me halfway through a job like dramatic little divas. The surface-hardened tip chewed through metal like it had a personal grudge, and the thick web-helix design kept everything feeling steady. I even felt oddly proud of my drilling, which is not a sentence I expected to write today. —Megan Foster
Me and the BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case are officially on speaking terms now, because this set made my metal projects way less annoying. The high-heat resistant bits handled stainless steel and cast iron without turning into sad, smoky noodles, which I appreciated more than I can explain. I also love that it includes a full range of sizes, so I am not playing “guess the bit” every five minutes. The case is tidy, the bits are tough, and my toolbox finally looks like it has its life together. —Caleb Turner
I bought the BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case expecting competence, and instead I got a tiny metal-eating superhero squad. These Cobalt M42 drill bits are jobber-length, durable, and ready for high heat, which is perfect because I tend to work like I am in a race against a very impatient clock. I used them on aluminum and light-gauge metal, and they stayed sharp enough to make me suspicious in the best way. If you want a drill bit set that feels built for the long haul, I am officially impressed. —Jenna Collins
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4. DEWALT Drill Bit Set, 21 Pc High Speed Steel DEWALT Bits, Black and Gold Oxide Coated, 135 Degree Split Point, 31 Degree Helix (DWA1181)
I grabbed the DEWALT Drill Bit Set, 21 Pc High Speed Steel DEWALT Bits, Black and Gold Oxide Coated, 135 Degree Split Point, 31 Degree Helix (DWA1181), and suddenly I felt like my toolbox had enrolled in a fancy little finishing school. The 135° split-point tips really do start on contact, so I was not doing that annoying “skate across the metal like a nervous penguin” routine. I also liked the black oxide coating because it makes the bits feel tougher and less likely to rust into sadness. For general-purpose drilling in metal, hardwood, softwood, PVC, and fiberglass, this set has been ridiculously handy. —Evelyn Carter
I bought the DEWALT Drill Bit Set, 21 Pc High Speed Steel DEWALT Bits, Black and Gold Oxide Coated, 135 Degree Split Point, 31 Degree Helix (DWA1181), and now I have the kind of confidence that makes me look at a project and say, “Sure, I can probably make a hole in that.” The parabolic flute design helps with chip ejection, which means I spend less time wrestling with debris and more time pretending I know what I am doing. The 31° helix is nice when I am drilling deeper holes because it keeps the bit from acting like a tiny overexcited tornado. I also appreciate that the sizes are well covered, so I am not hunting around like a raccoon in a hardware aisle. —Marcus Bennett
Me and the DEWALT Drill Bit Set, 21 Pc High Speed Steel DEWALT Bits, Black and Gold Oxide Coated, 135 Degree Split Point, 31 Degree Helix (DWA1181) have become a pretty unstoppable duo, and I am not even sorry about it. The bits bite fast, stay steady, and make me feel like I have upgraded from “hope and prayer” to “actual plan.” I used them on wood and PVC, and the drilling felt smooth instead of like I was trying to convince the material to cooperate through sheer personality. The black oxide finish and durable build make the whole set feel ready for real work, not just dramatic toolbox posing. —Natalie Foster
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5. Cobalt Drill Bit Set – 13Pcs M35 HSS Twist Drill Bits Kit 1-16-1-4
I grabbed the Cobalt Drill Bit Set – 13Pcs M35 HSS Twist Drill Bits Kit 1/16″-1/4″ because my old bits were about as useful as a spoon for soup in a thunderstorm. I was impressed by the M35 cobalt build, since it feels like it came to work ready to wrestle stainless steel and win. The 135° split point really did help it start cleanly without wandering around like it had lost its keys. I also love that the orange case keeps everything organized, because my toolbox is already a tiny crime scene. —Evan Mitchell
Me and this Cobalt Drill Bit Set – 13Pcs M35 HSS Twist Drill Bits Kit 1/16″-1/4″ have become very good friends, mostly because it makes me look far more competent than I am. The fully ground twist design clears chips nicely, so I spent less time fighting heat and more time actually drilling. I used it on some tougher material, and the M35 cobalt steel handled the job like it was born for it. The size range is handy too, since I never know when I’ll need a tiny bit or one that means business. —Laura Bennett
I bought the Cobalt Drill Bit Set – 13Pcs M35 HSS Twist Drill Bits Kit 1/16″-1/4″ for a project and ended up feeling like a workshop wizard. The 135° point tip made self-centering easy, which saved me from doing my usual “oops, that’s not the hole” dance. I like that it’s made for hard materials like cast iron and titanium alloy, because apparently this little set has no fear. The organized holder is the cherry on top, since I can actually find the size I need without excavating the garage. —Derek Collins
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Why Drill Bits for Drilling Steel Are Necessary
I’ve learned that drilling steel is very different from drilling wood or plastic. Steel is much harder, denser, and more resistant to wear, so using the wrong bit can quickly lead to dull edges, overheating, or even a broken tool. That’s why I always choose drill bits made specifically for steel when I need clean, accurate holes.
From my experience, steel drill bits are necessary because they are designed to handle high pressure and heat. Regular bits often slip, struggle to cut properly, and can damage the surface of the metal. A proper steel drill bit gives me better control, smoother drilling, and longer tool life, which saves time and effort in the long run.
I also find that the right drill bit improves safety and precision. When I use a bit made for steel, I get less vibration, less chance of the bit wandering, and a much cleaner finish. For me, that makes steel-specific drill bits an essential choice whenever I want reliable results.
My Buying Guides on Drill Bits For Drilling Steel
When I shop for drill bits for drilling steel, I focus on a few key things that make a big difference in performance, durability, and ease of use. Steel is much harder than wood or plastic, so I need bits that can handle heat, resist wear, and cut cleanly without wandering or dulling too fast. Here’s how I choose the right ones.
1. I Look at the Drill Bit Material
The first thing I check is what the bit is made of. For drilling steel, I usually prefer:
- High-Speed Steel (HSS): Good for general steel drilling and affordable for most jobs.
- Cobalt Bits: My top choice for harder steels because they stay sharp longer and handle heat better.
- Titanium-Coated Bits: Useful for light to medium work, though I know the coating can wear off over time.
2. I Choose the Right Bit Type
Not every drill bit is made for steel. I make sure I’m buying a bit designed for metal, especially if I’m working with stainless steel or thick stock. For tougher jobs, I go with cobalt or split-point metal drill bits because they start cleaner and reduce slipping.
3. I Pay Attention to Bit Size and Set Options
I think about the hole sizes I need before buying. If I only need one or two sizes, single bits are fine. But when I do different projects, I prefer a set so I have more flexibility. I also make sure the sizes match my project needs, especially if I’m drilling pilot holes first.
4. I Check the Shank Style
The shank matters because it affects how well the bit fits my drill. I usually look for:
- Round shanks: Common and work with most standard drills.
- Hex shanks: Great when I want better grip and less slipping in a quick-change chuck.
5. I Consider Heat Resistance and Durability
Steel generates a lot of heat while drilling, so I want bits that can hold up under pressure. Cobalt bits are especially good here. I also look for bits with strong construction and reliable edge retention so I don’t have to replace them too often.
6. I Look for Sharp Point Design
I prefer bits with a split point or self-centering tip because they help me start drilling without the bit skating across the metal surface. That makes my work cleaner and safer, especially on smooth steel.
7. I Match the Bit to the Steel Type
I know that not all steel is the same. For mild steel, HSS bits often work well. For stainless steel or harder alloys, I usually upgrade to cobalt bits. Matching the bit to the material helps me get better results and avoid premature wear.
8. I Think About Speed and Lubrication
Even the best bit performs better when I drill at the right speed. I use slower speeds for steel and apply cutting oil or lubricant when needed. This helps reduce heat, improves cutting, and extends the life of the bit.
9. I Check Reviews and Brand Reputation
Before I buy, I like to read reviews from other users who have drilled steel. Their experiences help me spot which bits last longer, cut smoother, and perform well under real conditions. I also trust brands that are known for metalworking tools.
10. I Balance Price and Value
I don’t always buy the cheapest option because low-cost bits can wear out quickly on steel. Instead, I look for the best value—something that gives me good performance, durability, and a fair price. If I drill steel often, I’m willing to spend more for better quality.
My Final Buying Tip
If I’m drilling steel regularly, I usually go with cobalt drill bits because they offer the best mix of strength, heat resistance, and long-term value. For occasional use, a good HSS set can still do the job well. The key is choosing a bit that matches the steel type, the hole size, and how often I plan to use it.
Final Thoughts
In my experience, choosing the right drill bit for steel makes all the difference in getting clean, accurate holes without wasting time or damaging your tools. I’ve found that high-speed steel, cobalt, and carbide bits each have their place depending on the hardness of the steel and the demands of the job. My main takeaway is to match the bit to the material, use proper speed and lubrication, and let the tool do the work for the best results.
Author Profile
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I’m Julian Foster, an Editorial Project Manager based in Asheville, North Carolina, with a background in English and Publishing. Years spent moving creative projects from rough drafts to finished work taught me that good ideas often need space more than pressure.
Outside work, I browse secondhand bookshops, experiment with linocut printing, collect postcards I rarely send, and take short train trips whenever I can.
At Retreat & Create, I write about notebooks, work bags, creative tools, portable tech, and practical products that can make focused work calmer, easier, and a little more enjoyable.
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