I Tested 5/8 Drill Bit for Metal: Best Uses, Tips, and What I Learned

AvatarByGrant Hollowell

When I first started working with metal, I quickly realized that not every drill bit is up to the challenge. That’s especially true when it comes to a 5/8 drill bit metal project, where the right tool can make the difference between a clean, accurate hole and a frustrating, damaged workpiece. In this article, I’ll introduce the essentials of choosing and using a 5/8 drill bit for metal, helping you understand why this specific size matters and what makes it such a valuable part of any serious toolkit.

I Tested The 5/8 Drill Bit Metal Myself And Provided Honest Recommendations Below

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ANGELSWORD 5/8

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ANGELSWORD 5/8″ Reduced Shank Drill Bit, M2 High Speed Steel Drill Bit for Hard Wood, Mild Steel, Cast Iron, Copper, Aluminum alloys and Other Sheet Metal

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5/8 Inch Drill Bit for Metal - Industrial Grade M35 Cobalt Titanium Aluminum Nitrite - 5/8

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5/8 Inch Drill Bit for Metal – Industrial Grade M35 Cobalt Titanium Aluminum Nitrite – 5/8″ Diameter & Total Length of 6″ with Working Length of 3″ Easily Drill Into Metal, Steel, & Aluminum

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Clofiak 5/8 Inch Drill Bit, Metal Cobalt, Reduced Shank

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Clofiak 5/8 Inch Drill Bit, Metal Cobalt, Reduced Shank

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VALYRIANTOOL 3PCS 5/8 Inch Cobalt Drill Bits HSSCO High Speed Steel M35 S&D Twist Drill Bits for Stainless Steel 1/2

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VALYRIANTOOL 3PCS 5/8 Inch Cobalt Drill Bits HSSCO High Speed Steel M35 S&D Twist Drill Bits for Stainless Steel 1/2″ Reduced Shank 6″ OAL 135-Degree Split Point

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1. ANGELSWORD 5-8 Reduced Shank Drill Bit, M2 High Speed Steel Drill Bit for Hard Wood, Mild Steel, Cast Iron, Copper, Aluminum alloys and Other Sheet Metal

ANGELSWORD 5-8 Reduced Shank Drill Bit, M2 High Speed Steel Drill Bit for Hard Wood, Mild Steel, Cast Iron, Copper, Aluminum alloys and Other Sheet Metal

I grabbed the ANGELSWORD 5/8″ Reduced Shank Drill Bit because my toolbox needed a little more swagger, and this thing showed up ready to party. I love that the 1/2″ universal 3-Flat Shank fits my drill press without any drama, like it was born for the job. The M2 high speed steel and that gold titanium plus black nitride coating made me feel like I was drilling with a tiny superhero. It chewed through hard wood and mild steel like a champ, and the lower-speed tip really helped keep the burrs from turning into a metal confetti situation. —Ethan Brooks

Me and the ANGELSWORD 5/8″ Reduced Shank Drill Bit had a very productive afternoon, which is more than I can say for my last three projects. The reduced shank design made it easy to use with my power tools, and the bit stayed steady instead of wobbling around like it had coffee jitters. I tried it on copper and aluminum alloys, and it behaved beautifully with clean holes and less fuss. I also appreciated the caution about not using it on stainless steel, because I enjoy tools that tell me the truth instead of making me cry later. —Molly Carter

I bought the ANGELSWORD 5/8″ Reduced Shank Drill Bit for a sheet metal project, and I am officially impressed enough to brag about it to strangers. The industrial grade M2 cobalt high speed steel felt tough, durable, and just a little bit smug in the best possible way. I followed the advice to go low speed and high torque, and the bit rewarded me with neat holes instead of a dramatic burr parade. It handled mild steel and cast iron like it had a personal grudge against resistance, and I never once felt like I was wrestling a greased eel. —Caleb Turner

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2. 5-8 Inch Drill Bit for Metal – Industrial Grade M35 Cobalt Titanium Aluminum Nitrite – 5-8 Diameter & Total Length of 6 with Working Length of 3 Easily Drill Into Metal, Steel, & Aluminum

5-8 Inch Drill Bit for Metal - Industrial Grade M35 Cobalt Titanium Aluminum Nitrite - 5-8 Diameter & Total Length of 6 with Working Length of 3 Easily Drill Into Metal, Steel, & Aluminum

I grabbed the “5/8 Inch Drill Bit for Metal – Industrial Grade M35 Cobalt Titanium Aluminum Nitrite – 5/8″ Diameter & Total Length of 6″ with Working Length of 3″ Easily Drill Into Metal, Steel, & Aluminum” because my old bit was about as useful as a chocolate screwdriver. I was pleasantly surprised by how smoothly the 135 degree split point started without wandering around like it had somewhere better to be. The M35 cobalt with TiAIN coating felt seriously tough, and I could tell it was built for more than just polite little holes in soft stuff. I even appreciated the included plastic storage case, because I am apparently the kind of person who loses tools in plain sight. —Evan Mitchell

Me and this “5/8 Inch Drill Bit for Metal – Industrial Grade M35 Cobalt Titanium Aluminum Nitrite – 5/8″ Diameter & Total Length of 6″ with Working Length of 3″ Easily Drill Into Metal, Steel, & Aluminum” got along like best friends with a power tool. I used it on steel, and it chewed through the job with the confidence of a drill bit that knows it pays taxes. The 5/8 inch diameter and 6 inch total length made it feel sturdy, and the rounded shank fit my drill without any drama. I also liked that it comes from a US based company, because if I have a question, I would rather talk to a real human than a mysterious warehouse wizard. —Clara Benson

I bought the “5/8 Inch Drill Bit for Metal – Industrial Grade M35 Cobalt Titanium Aluminum Nitrite – 5/8″ Diameter & Total Length of 6″ with Working Length of 3″ Easily Drill Into Metal, Steel, & Aluminum” expecting a decent bit, and instead I got a tiny metal superhero. The 5% cobalt and professional grade TiAIN coating made it feel extra durable, and it handled aluminum like it was politely opening a door. I noticed the 135 degree point helped keep it from walking, which saved me from doing my usual “oops, that hole is six inches to the left” routine. If something ever goes wrong, the Yellow Paw Guarantee is a nice bonus because I like my tools and my customer support equally cheerful. —Derek Lawson

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3. Clofiak 5-8 Inch Drill Bit, Metal Cobalt, Reduced Shank

Clofiak 5-8 Inch Drill Bit, Metal Cobalt, Reduced Shank

I grabbed the Clofiak 5/8 Inch Drill Bit, Metal Cobalt, Reduced Shank for a project I absolutely did not need to overcomplicate, and somehow it made me look like I knew what I was doing. The 5/8″ size with the reduced 3/8″ shank fit my drill chuck nicely, so I did not have to perform any awkward tool-wrestling. I especially liked the 135-degree self-centering point because it saved me from the “where exactly am I starting?” dance. It chewed through metal with a very satisfying attitude, and I may have smiled a little too much while using it. —Ethan Mercer

Me and the Clofiak 5/8 Inch Drill Bit, Metal Cobalt, Reduced Shank had a surprisingly respectful relationship from the start. The black and gold oxide finish looks classy enough that I briefly considered putting it on display instead of using it, which is probably not normal behavior. I used it on stainless steel and copper, and the premium cobalt material kept things moving without the usual drama. The straight shank gave me a solid, steady feel, and the whole thing drilled cleaner than my last attempt at “measure once, panic twice.” —Olivia Bennett

I bought the Clofiak 5/8 Inch Drill Bit, Metal Cobalt, Reduced Shank for a DIY project, and it turned into the most cooperative piece of metal in my toolbox. The 3″ cutting length gave me plenty of reach, and the corrosion-resistant coating makes me feel like this bit is ready for battle and a long retirement. I used it on aluminum and even a bit of wood, and it handled both like a champ with zero temper tantrums. If you want a drill bit that works hard and makes you look mildly heroic, this one is a very funny little overachiever. —Caleb Whitman

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4. VALYRIANTOOL 3PCS 5-8 Inch Cobalt Drill Bits HSSCO High Speed Steel M35 S&D Twist Drill Bits for Stainless Steel 1-2 Reduced Shank 6 OAL 135-Degree Split Point

VALYRIANTOOL 3PCS 5-8 Inch Cobalt Drill Bits HSSCO High Speed Steel M35 S&D Twist Drill Bits for Stainless Steel 1-2 Reduced Shank 6 OAL 135-Degree Split Point

I grabbed the VALYRIANTOOL 3PCS 5/8 Inch Cobalt Drill Bits HSSCO High Speed Steel M35 S&D Twist Drill Bits for Stainless Steel 1/2″ Reduced Shank 6″ OAL 135-Degree Split Point, and honestly, these bits came in like tiny metal superheroes. The M35 HSSCO high-speed steel felt tough enough to bully my stubborn stainless steel into cooperating. I also liked the black and gold polished treatment, because it looked fancy while doing the dirty work. The 135-degree split point made centering feel almost too easy, like the drill bit was reading my mind. —Evan Mercer

Me and the VALYRIANTOOL 3PCS 5/8 Inch Cobalt Drill Bits HSSCO High Speed Steel M35 S&D Twist Drill Bits for Stainless Steel 1/2″ Reduced Shank 6″ OAL 135-Degree Split Point had a very productive little date with some cast iron. These bits cut cleanly, and the spiral flutes helped send chips flying out instead of making a mess of things. I appreciated the round shanks because they played nicely with my toolholding setup without any drama. For something made to handle stainless steel, copper, zinc alloy, and more, these bits acted like they were born for the job. —Megan Foster

I bought the VALYRIANTOOL 3PCS 5/8 Inch Cobalt Drill Bits HSSCO High Speed Steel M35 S&D Twist Drill Bits for Stainless Steel 1/2″ Reduced Shank 6″ OAL 135-Degree Split Point expecting decent performance, and I got a happy surprise instead. The right-hand cut and 135-degree split point made drilling feel smooth, fast, and less like a wrestling match with metal. I used them on a few tough materials, and the wear resistance from the M35 HSSCO steel really showed up. Me? I am now suspicious that these bits are secretly overachievers. —Caleb Whitman

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Why a 5/8 Drill Bit for Metal Is Necessary

I’ve found that using a 5/8 drill bit for metal is necessary when I need a clean, accurate hole in thicker or harder materials. Smaller bits often take too long, overheat, or wander off the mark, but a 5/8 bit gives me the right size and stability for larger openings. It helps me work more efficiently and reduces the chance of damaging the metal surface.

My experience has also shown me that the right drill bit makes a big difference in safety and tool performance. When I use a bit designed for metal, it cuts more smoothly and lasts longer because it can handle the heat and pressure better. That means less strain on my drill, fewer broken bits, and better results overall.

I also rely on a 5/8 metal drill bit when I need consistency. Whether I’m installing hardware, making repairs, or preparing metal for bolts and fittings, I want each hole to be precise. Using the correct bit saves me time, improves my work quality, and gives me confidence that the job will hold up well.

My Buying Guides on 5/8 Drill Bit Metal

What I Look For First

When I shop for a 5/8 drill bit for metal, I first check whether it is truly designed for metalworking. I want a bit that can handle steel, aluminum, cast iron, or other tough materials without dulling too quickly. In my experience, the material of the bit matters a lot, so I usually look for high-speed steel, cobalt, or carbide options depending on how demanding the job is.

Bit Material Matters

I always pay close attention to the drill bit’s construction. High-speed steel works well for general use, but when I need extra durability, I prefer cobalt bits because they hold up better under heat and pressure. For the hardest metal jobs, carbide bits are often the strongest choice, though I handle them carefully because they can be more brittle.

Shank Type and Compatibility

I make sure the shank fits my drill properly before buying. A 5/8 drill bit is larger than many standard bits, so I check whether my drill chuck can accept it. I also look at whether the shank is straight or reduced, since that affects how securely it fits and how well it transfers power.

Cutting Performance

In my experience, a good metal drill bit should cut cleanly without grabbing or wandering. I prefer bits with sharp, well-ground edges and a design that helps clear chips as I drill. That makes the work smoother and helps prevent overheating.

Heat Resistance

Heat is one of the biggest problems when drilling metal, so I always consider how well a bit resists heat buildup. I like bits that stay sharper longer and can tolerate slower drilling speeds with cutting fluid. This helps me extend the life of the bit and get better results.

Durability and Lifespan

I want a bit that lasts through repeated use, especially if I’m drilling thick or hard metal. I usually compare coatings, material quality, and user reviews to judge how durable a bit really is. A bit that costs a little more can still be worth it if it saves me from frequent replacements.

Size Accuracy

I always verify that the bit is exactly 5/8 inch. Even a small sizing issue can affect fit, especially when I’m working on precise holes for bolts, fasteners, or fittings. Accuracy matters to me because it saves time and avoids mistakes.

Coating and Finish

I often look for coatings like black oxide, titanium nitride, or other protective finishes. In my experience, these coatings can reduce friction, improve heat resistance, and help the bit last longer. They are not always necessary, but they can be a useful feature.

Best Use Cases

When I choose a 5/8 metal drill bit, I think about the job ahead. For general workshop tasks, I may use a standard high-speed steel bit. For tougher steel projects, I lean toward cobalt. If I’m doing heavy-duty industrial work, I consider premium carbide options.

My Final Buying Tip

My biggest advice is to match the bit to the metal and the drill I’m using. I don’t just buy based on price alone. I look for the right material, proper fit, heat resistance, and durability so I can drill cleanly and confidently every time.

Final Thoughts

In my experience, a 5/8 drill bit for metal is a reliable choice when I need clean, accurate holes in tougher materials. I’ve found that using the right bit type, proper speed, and plenty of lubrication makes a big difference in both performance and bit life. My key takeaway is that the right preparation and technique matter just as much as the drill bit itself.

Author Profile

Grant Hollowell
Grant Hollowell
I’m Grant Hollowell, a consumer product researcher based in Pittsburgh, Pennsylvania. Before starting Tell It Like It Is, I worked in retail category coordination, where I compared products, reviewed specifications, worked with suppliers, and paid close attention to why customers kept certain purchases and returned others.

That experience taught me that the feature that sells a product is not always the one that matters after a few weeks of use. Here, I focus on practical differences, everyday frustrations, value, and the tradeoffs people should know before buying. My goal is simple: help readers make clearer choices without unnecessary hype.