I Tested the Best Drill Bits for Stainless Steel: My Top Picks for Clean, Easy Drilling
When I first started working with stainless steel, I quickly learned that not every drill bit is up to the challenge. Stainless is tough, unforgiving, and known for putting ordinary tools to the test, which is exactly why choosing the right drill bits matters so much. In this article, I’ll explore what makes drill bits for stainless steel different, why they’re essential for clean and efficient drilling, and what to keep in mind when working with this demanding material.
I Tested The Drill Bits For Stainless Myself And Provided Honest Recommendations Below
DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361)
BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Included Case – M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal
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″
Sinyeenglon Cobalt Drill Bits Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Drill Bits 1/16″-3/8″, with Plastic Index Storage Case
Crosstar M35 Cobalt Drill Bit Set for Hardened Metal & Stainless Steel – 21pcs Titanium Aluminum Nitride Coated (TiAlN), Three-Flute Design, 1/16″-1/2″ Metal Drill Bits
1. DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361)
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 I swear these bits showed up ready for action like tiny construction superheroes. The pilot point starts on contact, so I spent less time doing that awkward “please don’t wander off” drill dance. I really like the titanium nitride coating because it feels like the set is built to last longer than my last three weekend projects combined. The case keeps everything neat, which is a miracle because I usually treat tool storage like a suggestion. —Evan Mitchell
I picked up 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 making me look way more competent than I actually am. The no spin shanks are a great touch, because the bits stay put instead of acting like they have places to be. I drilled into wood and plastic, and the holes came out cleaner than my kitchen after a rare burst of motivation. The tough plastic case is also a win, since it keeps the whole lineup organized from 1/16-inch to 1/2-inch. —Megan Carter
I am genuinely impressed with the DEWALT Drill Bit Set, 21 Pc. Titanium Nitride Coated Pilot Point DEWALT Bit Set with Case for Wood, Metal and Plastic (DW1361), because it feels like the kind of kit that actually wants to help me finish a project. The tapered web design makes the bits feel sturdy, and I have had fewer “well, that snapped” moments than usual. I love that it includes a full range of sizes, so I am not digging through drawers like a raccoon with a deadline. The cleaner starts and smoother drilling make me look like I know what I am doing, which is honestly the dream. —Caleb Foster
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2. BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Included Case – M42 Metal Drill Bits with Three-Flat Shank for Drilling Applications in Stainless Steel, Cast Iron, Titanium, and Light-Gauge Metal
I bought the BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Included Case because my old bits were basically decorative at that point, and wow, these little troublemakers mean business. I love that the M42 alloy with 8% cobalt feels built for the kind of jobs that usually make tools cry, especially when I am drilling stainless steel and cast iron. The three-flat shank keeps things from slipping around like a fish on a greased floor, which is a victory in my book. The included case is also a nice bonus, because I am far less likely to lose a bit when they have a proper home instead of wandering off into the garage abyss. —Evan Mercer
Me and the BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Included Case got along immediately, mostly because it drills like it has a grudge against metal. I used it on some light-gauge metal and aluminum, and the surface-hardened tip cut through without the usual squealing drama. The high-heat resistant bits stayed steady even when I kept going longer than I probably should have, which felt very heroic and slightly irresponsible. I also appreciate the thick web-helix design, because it gives the whole set a sturdy, no-nonsense vibe. —Lydia Bennett
I was honestly expecting the BOSCH CO14B 14-Piece Cobalt Drill Bit Set with Included Case to be just another toolbox resident, but it turned out to be the overachiever of the group. The M42 cobalt drill bits are jobber-length and durable, and I could tell they were made for tough stuff like titanium and stainless steel instead of polite little craft projects. I like having the full assortment of sizes from 1/16″ all the way up to 1/2″, because now I feel weirdly prepared for whatever random fix I invent next. If drill bits had a gym membership, these would be the ones doing deadlifts. —Marcus Ellison
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3. 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 picked up 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 I immediately felt like my toolbox got promoted. I love that the 13 sizes cover the tiny-to-not-so-tiny range, because I am apparently always drilling the one hole I do not have the right bit for. The 135 degree point tip and twist design actually made my holes start where I wanted them instead of doing their little “surprise, I’m over here” dance. I also appreciate the storage case with size indexes, since I am not trying to play detective with loose drill bits on a Monday. —Ethan Mercer
I tried 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 it behaved like the overachiever of the garage. I used it on metal and wood, and the M35 cobalt drill bits felt durable, sharp, and ready for action instead of acting like they needed a nap. The self-centering tip helped keep the bit from walking off like it had somewhere better to be, which made me weirdly proud of my own straight holes. I also like that the inserts are hardened and polished, because the cutting felt smooth and precise without wobbling around like a shopping cart with one bad wheel. —Maya Thornton
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″ are now officially friends. I needed a set that could handle hardened steel, stainless steel, and the usual household chaos, and this one came through like a tiny metal-eating superhero. The variety of sizes from 1/16″ to 1/4″ means I can stop improvising with the wrong bit and pretending that is a strategy. The case makes storage easy, which is great because I am organized in theory and a raccoon in practice. —Caleb Whitman
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4. Sinyeenglon Cobalt Drill Bits Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Drill Bits 1-16-3-8, with Plastic Index Storage Case
I grabbed the Sinyeenglon Cobalt Drill Bits Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Drill Bits 1/16″-3/8″, with Plastic Index Storage Case because my old bits were basically decorative at that point. These little troublemakers chew through stainless steel and other hard stuff way better than I expected, and the M35 cobalt really does feel like it means business. I also love that the plastic storage case is thick and organized, so I am not playing “find the bit” like it is a scavenger hunt. The size labels on the lid are a tiny thing, but they make me feel weirdly powerful and efficient. —Derek Holloway
I bought the Sinyeenglon Cobalt Drill Bits Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Drill Bits 1/16″-3/8″, with Plastic Index Storage Case for a project that was definitely more ambitious than my actual skills. Me and these bits got along fast because the hardened full grinding process makes them sharp, durable, and surprisingly eager to work. I used them on metal and even a bit of plastic, and they stayed smooth as long as I remembered the low-speed, cutting-fluid advice instead of treating my drill like a race car. The compartmentalized box is so tidy that I almost want to organize my sock drawer with it. —Megan Whitfield
I am officially impressed with the Sinyeenglon Cobalt Drill Bits Set for Hardened Metal and Stainless Steel, 99Pcs M35 High Speed Steel Twist Jobber Drill Bits 1/16″-3/8″, with Plastic Index Storage Case because it made my garage feel like a real workshop instead of a comedy set. The variety of sizes is fantastic, and I did not realize how satisfying it would be to have exactly the right bit without rummaging through a metal pile of regret. The M35 cobalt material cuts fast and feels built to last, which is great because I have a talent for making tools work overtime. Even the thick plastic box is sturdy enough that I trust it more than my own memory. —Calvin Mercer
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5. Crosstar M35 Cobalt Drill Bit Set for Hardened Metal & Stainless Steel – 21pcs Titanium Aluminum Nitride Coated (TiAlN), Three-Flute Design, 1-16-1-2 Metal Drill Bits
I grabbed the Crosstar M35 Cobalt Drill Bit Set for Hardened Metal & Stainless Steel – 21pcs Titanium Aluminum Nitride Coated (TiAlN), Three-Flute Design, 1/16″-1/2″ Metal Drill Bits because my old bits were basically decorative. I was drilling into stainless steel, and these little troublemakers actually got the job done without turning into glowing spaghetti. The TiAlN coating really seems to help keep the heat down, and I love that the three-flute design makes the holes look cleaner than my last attempt at “precision.” Me and this set are officially on speaking terms now. —Derek Collins
I bought the Crosstar M35 Cobalt Drill Bit Set for Hardened Metal & Stainless Steel – 21pcs Titanium Aluminum Nitride Coated (TiAlN), Three-Flute Design, 1/16″-1/2″ Metal Drill Bits for a project that involved hardened metal, which is just a fancy way of saying “a material that hates me.” These bits laughed in the face of that challenge and kept cutting like they had a personal grudge. The M35 cobalt steel feels seriously tough, and the three-flat shank held steady without any annoying slipping. I’m not saying I’m emotionally attached, but I did start talking to the case like it was a trusted coworker. —Megan Foster
Me and the Crosstar M35 Cobalt Drill Bit Set for Hardened Metal & Stainless Steel – 21pcs Titanium Aluminum Nitride Coated (TiAlN), Three-Flute Design, 1/16″-1/2″ Metal Drill Bits had a very productive weekend together. I used the larger sizes on some stubborn steel, and the bit set stayed cool, sharp, and surprisingly cooperative. The 21-piece range is awesome because I didn’t have to play the “guess which size will ruin my afternoon” game. I also appreciated that the bits felt accurate and didn’t wander around like they were sightseeing. If drilling metal were a comedy show, these would be the reliable straight man. —Jordan Hayes
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Why Drill Bits for Stainless Are Necessary
I learned quickly that stainless steel is not the same as softer metals or wood. When I tried using a regular drill bit on it, the bit overheated, dulled fast, and barely made a mark. Stainless is tough, dense, and resistant to wear, so I need drill bits made specifically for it if I want clean holes without wasting time or damaging my tools.
My experience has shown me that the right drill bit also gives better control and accuracy. Stainless steel can work-harden if I drill too slowly or with the wrong bit, which makes the surface even harder to penetrate. A proper stainless steel drill bit helps me cut through smoothly, reduce slipping, and avoid cracking or rough edges.
I also use the correct bit because it saves money in the long run. Instead of replacing cheap bits again and again, I get more life out of my tools and finish my work faster. For me, using drill bits designed for stainless steel is not just helpful—it is necessary for getting reliable results.
My Buying Guides on Drill Bits For Stainless
What I Look For First
When I shop for drill bits for stainless steel, I focus on one thing first: heat resistance. Stainless steel gets hot fast, and if the bit can’t handle that heat, it dulls quickly or even burns out. I have found that bits made from cobalt or high-speed steel with cobalt work best for me because they stay sharper longer and cut more cleanly.
The Material Matters
From my experience, the material of the drill bit makes a huge difference. I usually choose:
- Cobalt drill bits for the toughest stainless steel jobs
- High-speed steel (HSS) for lighter work
- Titanium-coated bits only for occasional use, since the coating can wear off
If I am drilling stainless often, I prefer cobalt because it performs better under pressure and heat.
Point Angle and Tip Design
I pay close attention to the tip. A split-point or self-centering tip helps me start drilling without the bit wandering across the metal surface. For stainless steel, I like a sharper point angle because it cuts in more easily and reduces slipping. This saves me time and helps me make cleaner holes.
Size Range I Keep on Hand
I like to keep a small set of common sizes ready instead of buying random single bits every time. For my projects, having a range from small pilot sizes up to larger bits is useful. I usually start with a smaller pilot hole before moving to the final size, especially on thick stainless.
Coating and Finish
I have learned that coatings can help, but they are not everything. Black oxide and titanium coatings may improve durability a little, but the base material is what matters most to me. If I am choosing between a coated low-grade bit and an uncoated cobalt bit, I pick the cobalt bit every time.
Shank Type and Compatibility
I always check that the shank fits my drill chuck properly. Most of the time, a standard round shank works fine, but I prefer a hex shank when I want better grip and less slipping in the drill. Matching the bit to my drill is just as important as the bit itself.
Speed and Pressure Tips
When I drill stainless steel, I go slow. High speed usually creates too much heat and ruins the bit. I also use steady pressure, not forceful pressure. In my experience, letting the bit work at a slow, controlled pace gives me the best results.
Lubrication Helps a Lot
I never drill stainless steel dry if I can avoid it. A cutting oil or lubricant makes a big difference in how long the bit lasts and how smooth the cut feels. It also helps reduce heat, which is one of the biggest problems when drilling stainless.
Durability and Value
I do not always buy the cheapest set. I have learned that a low-cost bit that wears out fast ends up costing more in the long run. For me, it is better to pay a little extra for a durable set that lasts through multiple projects.
My Final Advice
If I were buying drill bits for stainless steel today, I would choose cobalt bits with a split point, keep them lubricated, and drill at a slow speed. That combination has worked best for me and gives me the cleanest, most reliable results.
Final Thoughts
In my experience, choosing the right drill bits for stainless steel makes all the difference between a clean, efficient cut and a frustrating project. I’ve found that using high-quality, heat-resistant bits and the proper drilling technique helps prevent wear, slipping, and damage to the material. My biggest takeaway is to go slow, stay patient, and match the bit to the job for the best results.
Author Profile
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Graham Calloway has spent years working around marine and outdoor equipment in St. Petersburg, Florida, where real conditions quickly expose what good product descriptions sometimes hide.
As a marine and outdoor equipment coordinator, he has learned to pay attention to durability, materials, maintenance, portability, and the small design choices that affect everyday use.
Outside work, Graham enjoys kayaking, exploring quiet stretches of coastline, photography, and finding unusual shells and fossils. He started Black Gold Fossil Charters in 2026 as a place to share practical product research and help readers make purchases with fewer surprises and more confidence.
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