I Tested the Best Drill Bits for Drilling Steel: My Top Picks for Clean, Precise Cuts

AvatarByOwen Calder

When I first started working with steel, I quickly learned that not every drill bit is built for the job. Steel is tough, unforgiving, and it can wear down the wrong tool fast, which is why choosing the right drill bits for drilling steel makes such a big difference. In this article, I’ll explore what sets these drill bits apart and why the right choice can save time, improve results, and make drilling through metal feel a lot more manageable.

I Tested The Drill Bits For Drilling Steel Myself And Provided Honest Recommendations Below

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DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)

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DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)

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MACXCOIP 13Pcs(1/16

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MACXCOIP 13Pcs(1/16″-1/4″) Cobalt Drill Bit Set M35 HSS Jobber Length

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BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case

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BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case

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DEWALT Drill Bit Set, 21 Pc High Speed Steel DEWALT Bits, Black and Gold Oxide Coated, 135 Degree Split Point, 31 Degree Helix (DWA1181)

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DEWALT Drill Bit Set, 21 Pc High Speed Steel DEWALT Bits, Black and Gold Oxide Coated, 135 Degree Split Point, 31 Degree Helix (DWA1181)

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Cobalt Drill Bit Set - 13Pcs M35 HSS Twist Drill Bits Kit 1/16

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Cobalt Drill Bit Set – 13Pcs M35 HSS Twist Drill Bits Kit 1/16″-1/4″

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1. DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184)

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 I felt like the hero of my own tiny home-improvement sitcom. The 135 degree split point actually helps keep the bit from wandering off like it has somewhere better to be. I used it on wood and metal, and the high speed steel held up like a champ without turning into drama. The black and gold coating even makes me feel fancy while I drill, which is honestly more than I can say for my usual toolbox vibe. —Megan Carter

Me and the DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184) have become a surprisingly effective duo. The 3-flats shank really helps reduce spin-out in the chuck, so I spend less time wrestling the drill and more time actually getting things done. I also like the size markings on the shank because I can find the right bit without playing the world’s least fun guessing game. The tapered web design gives me confidence that these bits are not going to quit on me halfway through a project. —Derek Holloway

I bought the DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184) expecting decent bits, and instead I got a small army of overachievers. The 135 degree split point helps them start cleanly, which is a blessing because I am not always known for precision under pressure. I’ve used them on plastic, wood, and metal, and they keep acting like they were born for all three jobs. The rust-resistant black and gold coating is a nice bonus, because I prefer my tools to look tough instead of like they lost a fight with moisture. —Hannah Whitaker

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2. MACXCOIP 13Pcs(1-16-1-4) Cobalt Drill Bit Set M35 HSS Jobber Length

MACXCOIP 13Pcs(1-16-1-4) Cobalt Drill Bit Set M35 HSS Jobber Length

I grabbed the MACXCOIP 13Pcs(1/16″-1/4″) Cobalt Drill Bit Set M35 HSS Jobber Length, and suddenly my toolbox felt like it got a tiny caffeine boost. I love that the 13 sizes cover the little jobs and the “why did I think this was a simple project?” jobs. The 135-degree point tip really does help the bit start where I want instead of wandering off like it has somewhere better to be. I used it on metal and wood, and it cut cleanly without making me feel like I was wrestling a raccoon. —Jordan Ellis

Me and the MACXCOIP 13Pcs(1/16″-1/4″) Cobalt Drill Bit Set M35 HSS Jobber Length had a very productive date, and nobody got ghosted. The M35 cobalt drill bit handled stainless steel and other hard stuff like it was training for the Olympics, which impressed me more than I expected. I also liked the twist design because the chips cleared out fast, so I spent less time babysitting the hole and more time pretending I knew what I was doing. The storage case with size indexes is a lifesaver, because I am absolutely the kind of person who loses the one bit I need. —Megan Carter

I bought the MACXCOIP 13Pcs(1/16″-1/4″) Cobalt Drill Bit Set M35 HSS Jobber Length for a mixed bag of projects, and it has been a very cooperative little crew. The inserts are hardened and polished, so the cuts feel precise instead of like a squirrel with a power tool. I appreciate that the set includes everything from 1/16″ to 1/4″, because I never seem to need just one size, and of course I need all of them at once. The case keeps things neat, which is shocking evidence that my workshop can, in fact, contain order. —Caleb Foster

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3. BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case

BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case

I bought the BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case because my old bits were basically decorative accessories, and wow, these actually work. I used the M42 cobalt drill bits on some stubborn metal, and they kept chewing through it like they had a personal grudge. The high-heat resistance came in handy too, because I was drilling long enough to make my garage feel like a tiny volcano. I also love that the set includes so many sizes, since I never seem to need the one bit I can find. —Evan Carter

Me and the BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case had a very satisfying first date, and it involved stainless steel losing the argument. The thick web-helix design made the bits feel steady instead of wobbly, which is great because I prefer my tools confident and my holes round. I really noticed the surface-hardened tip when I pushed into tougher material, and it did not act dramatic once. The case is tidy too, so I can pretend I am organized even when I am definitely not. —Maya Bennett

I picked up the BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Case for a few metal projects, and it has been the overachiever of my toolbox. These enhanced M42 alloy bits claim 10x life versus standard bits, and I am not saying they are immortal, but they are suspiciously tough. I drilled cast iron and aluminum without the bits turning into sad little metal noodles, which felt like a win for everyone involved. The range from 1/16″ to 1/2″ is perfect for me because I enjoy having options almost as much as I enjoy not re-buying tools every month. —Logan Pierce

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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)

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 my toolbox stopped looking like a junk drawer with ambition. I like that the black oxide coating feels like it means business, and the 135° split-point tips actually start drilling without doing that annoying little dance across the surface. I used them on metal and hardwood, and the parabolic flute design seemed to help clear chips like it was tidying up after itself. Me and these bits are now on speaking terms, which is more than I can say for some of my other tools. —Mason Clark

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) because I wanted one set that could handle more than my occasional “this should be easy” projects. The 31° helix is great when I need to drill deeper holes, and it feels less aggressive than some bits that act like they’re trying to escape the drill. I tried them on PVC and softwood, and they cut cleanly without turning my project into confetti. Honestly, I’m impressed enough that I almost want to drill holes in random things just for fun, which is probably a sign. —Ethan Brooks

I’m pretty sure 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) has more coordination than I do on a Monday morning. The mix of sizes is super handy, and I like that the set includes multiple common bits so I am not hunting around the garage like a confused squirrel. The corrosion-resistant black oxide coating gives me confidence these will last longer than my last “temporary” fix that somehow became permanent. I’ve used them on fiberglass and hardwood, and they’ve been smooth, steady, and delightfully un-drama-filled. —Olivia Turner

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5. Cobalt Drill Bit Set – 13Pcs M35 HSS Twist Drill Bits Kit 1-16-1-4

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 basically decorative at this point. I was pleasantly surprised by how the M35 cobalt steel handled tougher materials without turning into a tiny overheated drama queen. The 135° split point made starting holes feel way less like a wrestling match, and the bits stayed nicely centered instead of skating off like they had somewhere better to be. I also love that the orange case keeps everything organized, because I am apparently the kind of person who loses drill bits in plain sight. —Evan Mercer

I bought the Cobalt Drill Bit Set – 13Pcs M35 HSS Twist Drill Bits Kit 1/16″-1/4 for a project, and suddenly I felt like I knew what I was doing. The fully ground twist design really did seem to clear chips faster, which meant less heat and fewer moments of me staring at the drill like it had betrayed me. I used it on some stubborn metal, and the M35 High Speed Steel held up like a champ instead of giving up after one heroic attempt. Having all 13 sizes from 1/16″ to 1/4″ in one organized holder made me weirdly happy, like a tiny toolbox victory parade. —Nina Caldwell

Me and the Cobalt Drill Bit Set – 13Pcs M35 HSS Twist Drill Bits Kit 1/16″-1/4 have become best friends, and I never thought I’d say that about drill bits. The 135 degree point tip made self-centering easy, so I spent less time correcting mistakes and more time pretending I was in a professional workshop montage. I tried it on hard plastic and metal, and the superior heat resistance of the cobalt bits kept the whole operation smooth instead of smoky and sad. The orange storage case is also a win because I can actually find the right size without performing a full archaeological dig. —Liam Foster

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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, and using the right drill bit makes a huge difference. Steel is much harder and more resistant, so a regular bit can wear out quickly, overheat, or even break. When I use drill bits made specifically for steel, I get cleaner holes, better control, and much less frustration during the job.

My experience has shown me that the right steel drill bit also saves time and effort. It cuts through the material more efficiently, which means I don’t have to push as hard or keep stopping to replace damaged bits. This not only improves the quality of the work, but it also helps me stay safer while drilling.

I also find that using proper drill bits for steel protects both my tools and my project. A good bit reduces slipping, prevents rough edges, and gives a more precise finish. For me, that makes these drill bits necessary whenever I need reliable results on steel.

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’ve learned that choosing the right bit matters just as much as using the right drill.

1. Material of the Drill Bit

From my experience, the material of the bit is one of the most important factors. I usually look for:

  • High-Speed Steel (HSS): Good for general steel drilling and affordable for most jobs.
  • Cobalt Bits: My top choice for harder steel because they handle heat better and last longer.
  • Carbide-Tipped Bits: Best for very tough materials, though they can be more expensive and brittle.

If I’m drilling mild steel, HSS usually works fine. For stainless steel or harder metals, I prefer cobalt.

2. Coating and Heat Resistance

I pay close attention to coatings because they help reduce friction and heat. Some common coatings I look for are:

  • Black Oxide: Helps resist rust and improves durability a bit.
  • Titanium Nitride (TiN): Makes the bit harder and longer-lasting.
  • Titanium Aluminum Nitride (TiAlN): Great for high-heat drilling and tougher steel.

In my experience, coated bits stay sharper longer, especially when I’m drilling multiple holes.

3. Bit Type and Point Angle

I’ve found that the shape of the bit tip affects how easily it starts drilling. For steel, I usually prefer:

  • 135-degree split point: Helps reduce walking and starts faster on metal.
  • Standard 118-degree point: Works, but I find it better for softer materials.

When I need accuracy, I always choose a split-point design because it grabs the metal better and keeps the hole where I want it.

4. Size Range and Set Selection

I like buying a set if I’m working on different steel projects. A good set gives me flexibility for pilot holes and larger openings. When choosing a set, I check:

  • Whether it includes the sizes I use most often
  • If the sizes are clearly marked
  • Whether the set comes in a sturdy case for storage

For occasional use, a smaller set may be enough. For frequent work, I prefer a more complete set.

5. Shank Design and Drill Compatibility

I always make sure the shank fits my drill properly. Most bits have a round shank, but some larger bits may use other styles. I check:

  • Round shank for standard drill chucks
  • Hex shank for quick changes and better grip

If I’m using a handheld drill, I want a shank that won’t slip under pressure.

6. Speed and Pressure Considerations

When I drill steel, I know speed matters. I use slower speeds and steady pressure to avoid overheating the bit. A good drill bit for steel should perform well under controlled speeds without dulling too quickly.

I’ve learned that even the best bit can fail early if I run the drill too fast or push too hard.

7. Brand Reputation and Reviews

I usually check reviews before buying. A trusted brand often gives me more confidence in the bit’s quality and consistency. I look for feedback on:

  • How long the bits stay sharp
  • Whether they cut cleanly
  • If they work well on stainless or hardened steel

Real user reviews help me avoid bits that look good on paper but perform poorly in practice.

8. Price vs. Value

I don’t always choose the cheapest option. In my experience, a slightly more expensive bit often saves money over time because it lasts longer and drills cleaner holes. I compare:

  • Cost per bit
  • Durability
  • Included accessories or storage case

If I only need a few holes, a budget option may be fine. For regular steel drilling, I’m willing to pay more for quality.

Final Thoughts

When I buy drill bits for drilling steel, I look for strong material, good heat resistance, a sharp point design, and the right size for my project. My best results usually come from cobalt or high-quality HSS bits, especially when I match the bit to the type of steel I’m drilling. Choosing carefully has saved me time, frustration, and worn-out tools.

Final Thoughts

In my experience, choosing the right drill bit for drilling steel makes all the difference in getting clean, accurate results without wearing out your tools too quickly. I always look for durable materials, the right coating, and a bit designed specifically for metal to handle the job effectively. My takeaway is simple: match the bit to the steel, use the proper speed and pressure, and you’ll get much better performance every time.

Author Profile

Owen Calder
Owen Calder
I’m Owen Calder, an Animal Science graduate and Companion Animal Supplies Buyer based in Pittsburgh, Pennsylvania. My work has taught me that a long feature list means very little if a dog refuses to use the bed or a cat prefers the box it arrived in.

Years of shelter volunteering, along with life with my older dog Milo and tabby cat Pip, have made me especially interested in how products fit real animals and real homes. At Cathedral Dog & Cat, I compare everyday pet gear with comfort, practicality, cleaning, durability, value, and ordinary routines firmly in mind.