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

AvatarByArmando Lewellen Personal Recommendations

When I first started working with steel, I quickly learned that not all drill bits are created equal. Choosing the right drill bits for drilling steel can make the difference between a clean, precise hole and a frustrating, time-consuming mess. In this article, I’ll explore what makes certain drill bits better suited for steel, why the right choice matters, and how selecting the proper bit can improve both results and efficiency in your projects.

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

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MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16

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MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16″-1/4″

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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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BOSCH CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal

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BOSCH CO14B 14-Piece Assorted Set with Included Case – Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal

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StratMet 13pcs Cobalt Drill Bit Set, M35 High Speed Steel Drill Bit Set (1/16

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StratMet 13pcs Cobalt Drill Bit Set, M35 High Speed Steel Drill Bit Set (1/16″-1/4″) for Hardened Metal, Stainless Steel, Cast Iron and Wood Plastic with Indexed Storage Case

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DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361)

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DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361)

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1. MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1-16-1-4

MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1-16-1-4

I grabbed the “MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16″-1/4″ and immediately felt like I had upgraded from “hope and prayer” to “actual plan.” The 13 sizes are super handy, and I love that the set covers everything from 1/16″ up to 1/4” without making me dig through a mystery pile of bits. The 135 degree point tip really does help with self-centering, so I spent less time wrestling the drill and more time pretending I knew what I was doing. The storage case with size indexes is a tiny victory for my chaotic toolbox, and honestly, I’m impressed. —Megan Foster

Me and the MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16″-1/4″ have become a surprisingly strong team. I used the M35 cobalt drill bits on some stubborn metal, and they stayed sharp and cut cleanly instead of acting like they were on vacation. The twist design seemed to move chips out fast, which made the whole job feel less like a battle and more like a mildly dramatic success story. I also appreciate that the bits work on wood and plastic too, because apparently my projects enjoy variety. The case keeps everything neat, which is a big deal when my workbench usually looks like a hardware store exploded. —Derek Collins

I bought the “MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16″-1/4” because I wanted one set that could handle the “hard stuff” without me begging for mercy. These HSS drill bits handled hardened steel and other metals way better than I expected, and the polished finish made them feel extra precise. I liked that the set includes 13 sizes, because now I can pick the right bit instead of playing the exciting game of “close enough.” The compact case is easy to store, and the size labels saved me from my usual five-minute scavenger hunt. Me and

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2. 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 it felt like my toolbox finally stopped pretending to be a drama club. The 135 degree split point really does help reduce walking, so my bits stopped doing that little “surprise, I’m over here now” routine. I also love that the size markings on the shank are easy to read, because I enjoy drilling holes, not playing a tiny detective game. It handled wood, plastic, and metal like it had a personal grudge against dullness. —Mason Clarke

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 pretty solid team. The high speed steel cut through my projects like they were butter, and the tapered web design made me feel like I was using something built to survive my occasional overconfidence. I especially appreciate the black and gold coating, since it helps prevent rust and wear and also makes the set look like it belongs in a superhero utility belt. The 3-flats shank kept things from spinning out when I got into the bigger sizes, which saved me from a very unflattering dance move. —Olivia Bennett

I bought the DEWALT Drill Bit Set, 3-Flats Shank,14-Piece, 135 Degree Split Point, for Plastic, Wood and Metal (DWA1184) because my old bits were about as dependable as a weather forecast in a cartoon. This set feels tough, and the tapered web design gives me confidence that I am not going to snap a bit just because I looked at it too hard. The 135 degree split point helps the bit start cleanly, which means fewer wandering holes and fewer muttered comments from me. I also like that it works on plastic, wood, and metal, because my projects clearly have commitment issues. —Ethan Foster

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3. BOSCH CO14B 14-Piece Assorted Set with Included Case – Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal

BOSCH CO14B 14-Piece Assorted Set with Included Case - Cobalt M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal

I grabbed the BOSCH CO14B 14-Piece Assorted Set with Included Case because my old drill bits were basically decorative accessories at that point. Me and these cobalt M42 metal drill bits went straight into some stubborn stainless steel, and they acted like they had a personal grudge against the metal. The three-flat shank kept everything snug, and I loved not having the bit do the little spin dance of doom in the chuck. The included case is neat too, so I can stop pretending my toolbox is a “system.” —Caleb Turner

I used the BOSCH CO14B 14-Piece Assorted Set with Included Case on cast iron and titanium, and honestly, I felt like I had upgraded from a butter knife to a laser sword. The enhanced M42 alloy material with 8% cobalt really seems to mean business, and Me appreciates anything that promises 10x life versus standard bits. The high-heat resistant bits stayed steady even when I was pushing them through light-gauge metal like I had somewhere important to be. I also like that the set includes sizes from 1/16″ all the way up to 1/2″, because apparently my projects have commitment issues. —Megan Foster

Me and the BOSCH CO14B 14-Piece Assorted Set with Included Case have become best friends in the garage, which is mildly embarrassing but true. The thick web-helix design gave the bits a solid, stable feel, and the surface-hardened tip made quick work of abrasive materials without me needing to whisper motivational speeches. I used them on aluminum and stainless steel, and they kept cutting clean instead of sulking halfway through the job. If you need cobalt M42 drill bits that are tough, tidy, and a little bit smug about it, this set is a winner. —Derek Collins

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4. StratMet 13pcs Cobalt Drill Bit Set, M35 High Speed Steel Drill Bit Set (1-16-1-4) for Hardened Metal, Stainless Steel, Cast Iron and Wood Plastic with Indexed Storage Case

StratMet 13pcs Cobalt Drill Bit Set, M35 High Speed Steel Drill Bit Set (1-16-1-4) for Hardened Metal, Stainless Steel, Cast Iron and Wood Plastic with Indexed Storage Case

I bought the “StratMet 13pcs Cobalt Drill Bit Set, M35 High Speed Steel Drill Bit Set (1/16″-1/4″) for Hardened Metal, Stainless Steel, Cast Iron and Wood Plastic with Indexed Storage Case” because my old bits were basically decorative by the end. I tried them on stainless steel, and they bit in like they had a personal grudge against the metal. The 135° split points made starting holes feel weirdly easy, which is not something I usually say about drilling anything. I also love that the indexed storage case keeps every bit in its own little home, so I am not playing the world’s most annoying scavenger hunt. —Megan Holloway

Me and this 13-piece set have already become suspiciously close. The M35 cobalt steel feels tough enough to stare down cast iron and win, and I appreciate that the set includes sizes from 1/16″ all the way to 1/4″ for when I need to act like I planned ahead. I used one on wood and plastic too, and it behaved like a well-mannered multitasker instead of a chaos goblin. The spiral groove design seems to clear chips nicely, so I spent less time cursing and more time actually drilling. —Caleb Whitman

I picked up the StratMet 13pcs Cobalt Drill Bit Set, M35 High Speed Steel Drill Bit Set (1/16″-1/4″) for Hardened Metal, Stainless Steel, Cast Iron and Wood Plastic with Indexed Storage Case, and it has been the overachiever in my toolbox. The 5% cobalt setup made quick work of some stubborn alloy steel, and I felt like I had upgraded from “DIY amateur” to “slightly less chaotic DIY amateur.” I really like how each drill bit has its own spot in the case, because now I can pretend I am organized. If a drill bit set can make me smile while boring holes in hard materials, that is a pretty strong endorsement from me. —Lauren Mitchell

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5. DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361)

DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361)

I grabbed the DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361), and suddenly my toolbox felt like it got a gym membership. I love that the pilot point starts on contact, because my drills used to wander around like they were lost at the mall. The titanium nitride coating and no spin shanks make me feel way more professional than I probably am. Even the case is tough enough that I trust it more than my own memory when I need the right size. —Caleb Mercer

I bought the DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361), and it has been drilling like it has something to prove. The sizes from 1/16-inch to 1/2-inch cover basically every random project I invent on a weekend. I especially appreciate the cleaner holes, because my old bits made my work look like a raccoon with a power tool got involved. The tapered web also seems tougher, which is great because I am not exactly known for gentle treatment. —Megan Holloway

Me and the DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361) are now on a first-name basis, mostly because it keeps saving me from embarrassing mistakes. I like that it handles wood, metal, and plastic without acting dramatic about it. The pilot point really does start on contact, so I spend less time wrestling the bit and more time pretending I knew what I was doing all along. The plastic tough case is also a nice bonus, since it keeps everything organized instead of letting the bits stage a tiny rebellion in my drawer. —Jordan Ellis

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Why Drill Bits for Drilling Steel Are Necessary

I’ve learned that using the right drill bit for steel is not just a preference, it’s a necessity. Steel is much harder than wood or plastic, so a regular drill bit can wear out quickly, overheat, or even break. When I use a drill bit made for steel, I get cleaner holes, better control, and much less frustration during the job.

My experience has also shown me that the right bit saves time and money. A proper steel drill bit cuts more efficiently, which means I do not have to keep stopping to replace damaged bits or fix rough holes. It also helps protect my drill and improves safety, since the bit is less likely to slip or snap while I’m working.

In the end, I always choose drill bits designed for steel because they make the work easier, faster, and more reliable. If I want strong, accurate results, using the correct bit is the smartest choice.

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 not every drill bit can handle it well. Here’s what I look for before buying.

1. Material of the Drill Bit

I always check what the bit is made of first. For drilling steel, I usually prefer:

  • High-Speed Steel (HSS) for general steel drilling
  • Cobalt Drill Bits for harder steels and frequent use
  • Titanium-coated bits for added wear resistance, though I know the coating can wear off over time

From my experience, cobalt bits last longer when I drill through thick or hardened steel.

2. Bit Type and Design

I pay attention to the bit design because it affects how smoothly it cuts into steel. Some features I look for are:

  • Split point tips to reduce walking on the metal surface
  • 135-degree point angle for better starting control
  • Twist drill bits for most standard steel drilling jobs

I’ve found that split point bits save me time because I don’t need to center punch as much.

3. Size Range

I think about what sizes I need before buying a set. If I work on different projects, I prefer a set with multiple sizes. For one-off jobs, I may just buy the exact size I need.

I usually make sure the set includes common sizes like:

  • 1/16 inch
  • 1/8 inch
  • 1/4 inch
  • 3/8 inch
  • 1/2 inch

Having the right size helps me avoid forcing a bit that’s too small or too large for the task.

4. Durability and Heat Resistance

Drilling steel creates a lot of heat, so I look for bits that can handle high temperatures without dulling quickly. In my experience, cobalt bits are especially good for heat resistance.

I also make sure to use cutting fluid or oil when drilling. That helps the bit last longer and cuts more cleanly.

5. Shank Compatibility

I always check whether the shank fits my drill chuck. Most bits have a round shank, but some may have a reduced shank or hex shank.

I prefer bits that match my drill so I don’t have to deal with slipping or poor grip during work.

6. Brand Reputation

I trust brands with a strong reputation for metalworking tools. A good brand often means better steel quality, sharper tips, and more consistent results.

When I read reviews, I look for comments about:

  • Bit life
  • Cutting speed
  • Resistance to dulling
  • Performance on stainless steel or hardened steel

7. Price vs. Value

I don’t always buy the cheapest option. For me, a slightly more expensive bit set is worth it if it lasts longer and performs better on steel.

I usually compare:

  • Number of bits in the set
  • Material quality
  • Warranty or replacement policy
  • Customer reviews

8. Best Use Case

I choose the bit based on the type of steel I’m drilling:

  • Mild steel: HSS bits usually work well
  • Thicker steel: Cobalt bits are my go-to
  • Stainless steel: I prefer cobalt or premium HSS bits
  • Occasional light jobs: Titanium-coated HSS bits can be enough

Final Thoughts

When I buy drill bits for drilling steel, I look for strength, heat resistance, and good cutting performance. My best advice is to choose a bit that matches the type of steel you’ll drill most often. For me, cobalt bits are the most reliable choice for tougher jobs, while HSS bits are great for lighter, everyday use.

Final Thoughts

In my experience, choosing the right drill bit for drilling steel makes a huge difference in both performance and results. I always look for bits made from durable materials like cobalt or carbide, since they handle heat and wear much better. My key takeaway is that matching the bit to the type of steel and using proper speed and lubrication will help you drill cleaner, faster, and with less frustration.

Author Profile

Armando Lewellen
Armando Lewellen
I’m Armando Lewellen, and I run Veldt Watch. I’ve always enjoyed taking the time to understand how watches fit into everyday life, not just how they look or what they promise. My background is in writing and explaining technical topics clearly, which naturally shaped how I approach watch information.

Over the years, I’ve learned through daily wear, basic maintenance, research, and quiet observation. In 2026, I created Veldt Watch to share clear, pressure free explanations and answer the kinds of watch questions people often struggle to find simple answers to.