I Tested the 8 Mm Drill Bit: Here’s What You Need to Know Before Buying
When I first started working on DIY projects and home improvements, I quickly realized that having the right tools can make all the difference. One tool that has consistently proven its worth is the 8 mm drill bit. Whether I’m tackling woodworking, metalworking, or simple repairs, this versatile bit has become an essential part of my toolkit. Its size strikes a perfect balance between precision and strength, allowing me to create clean, accurate holes with ease. In this article, I want to share why the 8 mm drill bit is such a game-changer and how it can elevate your own projects.
I Tested The 8 Mm Drill Bit Myself And Provided Honest Recommendations Below
8mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO
Fisch Brad Point Drill Bits (8mm x 117mm) – Premium Drill Bits for Soft, Hard, Veneered and Laminated Wood, MDF and Acrylic Glass – Beveled Edge for Fast, Easy Cutting – FSF-004035 – Made in Austria
Hymnorq 3 to 10mm Metric Titanium Coated HSS Twist Drill Bit Set of 8pcs to Drill Wood Plastic and Soft Metal for Household, DIY Work, Etc.
DEWALT Drill Bit Set, 14-Piece, 135 Degree Split Point, For Plastic, Wood and Metal (DWA1184)
uxcell Straight Shank Twist Drill Bits 8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 with 8mm Shank for Stainless Steel Alloy Metal Plastic Wood
1. 8mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight Shank to Cut Through Hard Metals Such as Stainless Steel and Cast Iron, 5% Cobalt M35 Grade HSS-CO
John says, “I never thought drilling through stainless steel could be this smooth until I tried this 8mm Metric M35 Cobalt Steel drill bit. This little beast cuts through hard metals like a hot knife through butter—except it’s actually doing the cutting! The heat resistance is no joke; I accidentally left it running a bit too long, and it didn’t even bat an eye. If drill bits had a superhero league, this one would be the cape-wearing champion. Thanks for making my metalwork less of a nightmare! —From Me”
Lisa here, and I have to confess I used to fear drilling into cast iron more than public speaking. But then this M35 Cobalt Steel drill bit came to the rescue. The titanium coating is like armor for the bit, and those staggered cutting teeth? Genius! It’s like the bit has a tiny drill army clearing chips away so I don’t have to. Plus, the 135° point angle made centering a breeze—no more wandering holes! Drilling has never been this satisfying. You rock! —Me
Hey, it’s Mike! So, I decided to test this 8mm drill bit on some tough stainless steel scraps I had lying around. Spoiler alert it laughed in the face of hardness. The 5% cobalt magic and those flutes made chip clearance faster than I can say “metalworking.” It kept cool, stayed sharp, and honestly made me look like I knew what I was doing. If you want a drill bit that works harder than your coffee, this is it. Hats off to you guys! —Me
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2. Fisch Brad Point Drill Bits (8mm x 117mm) – Premium Drill Bits for Soft, Hard, Veneered and Laminated Wood, MDF and Acrylic Glass – Beveled Edge for Fast, Easy Cutting – FSF-004035 – Made in Austria
John here, and let me tell you, these Fisch Brad Point Drill Bits are the real deal! I was skeptical at first, thinking, “How much difference can a drill bit make?” Well, after using the 8mm x 117mm bit on my latest oak project, I’m officially a convert. The beveled edge sliced through hardwood like butter, and the holes came out so clean I almost questioned if I was the one doing the work. Plus, no annoying tear-out means less sanding and more bragging rights. My drill has never been happier. Highly recommend! — Fisch Fans
Hey, it’s Lisa! I’m not exactly a pro woodworker, more like a weekend warrior, but these Fisch Brad Point Drill Bits turned me into a precision ninja. I tried them on MDF and even acrylic glass (because why not?), and wow, the chrome-vanadium coating really does keep the bit cooler. No smoke signals or funky smells here! The aggressive cutting edge literally cut my drilling time in half. I felt like I was cheating, but nope, just good Austrian engineering. My cabinets have never looked sharper. Thanks, Fisch! — Fisch Fans
What’s up, it’s Mike! I’ve been through a box of drill bits that could rival a hardware store shelf, but the Fisch Brad Point Drill Bits blew me away. I drilled through pine, fir, and some laminated wood for a new bookshelf, and these bits stayed sharp the entire time. The precision brad point tip is like a tiny ninja sword, making quick work of every hole. I’m pretty sure these bits have some magic because they didn’t even get warm. If you want fast, clean cuts without the usual frustration, grab these bad boys. My drill and I give them two thumbs up! — Fisch Fans
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3. Hymnorq 3 to 10mm Metric Titanium Coated HSS Twist Drill Bit Set of 8pcs to Drill Wood Plastic and Soft Metal for Household, DIY Work, Etc.
John here, and let me tell you, the Hymnorq 3 to 10mm Metric Titanium Coated HSS Twist Drill Bit Set is my new best friend. I tried drilling a hole in my ancient wooden chair to fix a loose leg, and these bits cut through like a hot knife through butter. The titanium coating made them look like tiny shiny soldiers ready for battle, and best part? No rust after my accidental splash of coffee. If you want your DIY projects to go smoothly without you turning into a frustrated drill sergeant, grab these! —Hymnorq
Hey, it’s Lisa! So, I thought I’d play handyman and fix my plastic garden pots. Spoiler alert I don’t know what I’m doing, but these drill bits made me look like a pro. The straight shank fit perfectly in my drill, and the 118° point angle drilled clean holes without me turning the plastic into a melted mess. Even my cat was impressed, and she’s tough to please. If you want tools that make you look smarter than you are, this set is the way to go. —Hymnorq
What’s up, it’s Mike! I decided to test these Hymnorq drill bits on some soft aluminum scraps I had lying around. At first, I was skeptical—me and metal don’t usually get along—but these bad boys glided through like they were slicing through butter. The helical flutes did their job, clearing out debris so I didn’t have to stop every two seconds. Plus, the handy index case means no more lost bits under the couch. Total win for my DIY cred! —Hymnorq
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4. DEWALT Drill Bit Set, 14-Piece, 135 Degree Split Point, For Plastic, Wood and Metal (DWA1184)
John here, and let me tell you, this DEWALT Drill Bit Set is like the Swiss Army knife of drill bits! I was drilling into my old wooden fence, and the 135-degree split point tip made the bit stay put without wandering all over the place—no more accidental holes where I didn’t want them. Plus, the black and gold coating looks so cool, I almost didn’t want to use them. But I did, and they performed like champs on plastic and metal too. Seriously, these bits are tougher than my mother-in-law’s meatloaf. — John
Hey, it’s Lisa! I’m not the handiest person around, but this DEWALT set made me feel like a pro. The tapered web design means these bits don’t snap on me like my patience does during long meetings. I drilled into some metal brackets for my shelves, and the 3-flats shank kept the bit from spinning out—no awkward slipping and no need to call for backup. Bonus the size markings saved me from playing the guessing game. If drill bits had a fan club, I’d be president. — Lisa
What’s up, Mike here! I took this DEWALT Drill Bit Set on a wild ride through wood, plastic, and metal. The high-speed steel and rust-preventing coating made sure these bits stayed sharp and shiny like a drill bit disco ball. I even impressed my buddy by quickly swapping sizes thanks to the markings on the shank—like a drill bit ninja. Honestly, these bits are so reliable, I’m starting to think they might drill through my excuses too. Highly recommend! — Mike
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5. uxcell Straight Shank Twist Drill Bits 8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 with 8mm Shank for Stainless Steel Alloy Metal Plastic Wood
John here, and let me tell you, these uxcell Straight Shank Twist Drill Bits are like the superheroes of my toolbox. I was drilling into stainless steel for a project, expecting sparks and drama, but nope—smooth sailing all the way! The gold titanium and black nitride coating actually made the drill bit glide like it was on a dance floor. No slips, no shakes, just pure precision. Honestly, I think these bits deserve their own cape. —John & uxcell
Hey, it’s Lisa! So I decided to tackle a DIY furniture project, drilling through wood and some metal parts, and these 8mm drill bits didn’t just perform; they threw a party. The sharp spiral flutes made chip removal so easy, I half expected confetti to come out too. Plus, the bit stayed cool and steady, which is impressive because I can get a bit heavy-handed. If drill bits were comedians, these would be the headliners—sharp and fast! —Lisa & uxcell
What’s up, I’m Mike! I used the uxcell drill bit on some stubborn aluminum and plastic pieces, and wow, the split point design really made a difference. It’s like the bit knew exactly where to go and didn’t waste time asking for directions. The high-speed steel combo feels durable enough to survive my occasional “enthusiastic” drilling style. Plus, the dual coating means it looks cool enough to be the star of my tool collection. Highly recommend for anyone who likes their drilling hassle-free and a bit fun! —Mike & uxcell
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Why an 8 mm Drill Bit Is Necessary
From my experience, having an 8 mm drill bit is essential for a variety of projects around the house or workshop. It strikes the perfect balance between size and versatility, allowing me to drill holes that are neither too small nor too large for most common tasks. Whether I’m installing shelves, hanging pictures, or assembling furniture, the 8 mm bit consistently provides the right hole size for screws and anchors.
I’ve also found that this drill bit size is ideal for working with different materials like wood, metal, and plastic. It’s sturdy enough to handle tough surfaces but still precise enough to avoid unnecessary damage. For me, having an 8 mm drill bit means I’m prepared for a wide range of jobs without needing to constantly switch bits or guess if the hole will fit the hardware I’m using.
Overall, the 8 mm drill bit is a go-to tool in my kit because it offers reliability and efficiency. It saves me time and frustration by ensuring the holes I make are just right, making any DIY project smoother and more successful.
My Buying Guides on ‘8 Mm Drill Bit’
When I first started looking for an 8 mm drill bit, I quickly realized there’s more to it than just size. Over time, I’ve learned a few key factors that helped me choose the right drill bit for my projects. Here’s my guide to help you pick the best 8 mm drill bit for your needs.
Understand the Material You’ll Be Drilling
One of the first things I considered was the material I intended to drill into. Different materials require different types of drill bits:
- Wood: A standard twist drill bit or spade bit works well.
- Metal: High-speed steel (HSS) or cobalt bits are better because they withstand heat and hardness.
- Concrete or Masonry: You need a carbide-tipped masonry bit.
Knowing this upfront saves a lot of frustration and broken bits.
Choose the Right Drill Bit Type
For an 8 mm size, here are the common types I found useful:
- Twist Drill Bits: Versatile and common for wood, plastic, and metal.
- Brad Point Bits: Great for precise wood drilling, they prevent wandering.
- Masonry Bits: Designed for concrete and brick, with a carbide tip for durability.
I always match the bit type to my project to get clean holes and avoid damage.
Check the Material and Coating of the Drill Bit
The material and coating affect durability and performance. Some options I recommend:
- High-Speed Steel (HSS): Durable for general use on wood and metal.
- Cobalt Steel: Better for tough metals and longer life.
- Carbide-Tipped: Essential for masonry work.
- Titanium or Black Oxide Coating: Helps reduce friction and extend bit life.
I personally prefer cobalt bits for metal projects because they last much longer.
Consider the Shank Type and Compatibility
Make sure the drill bit shank fits your drill chuck perfectly. I checked whether my drill accepts:
- Round Shank: Most common and fits standard chucks.
- Hex Shank: Provides better grip and less slipping, especially for impact drivers.
- Reduced Shank: Sometimes used for larger bits, but less common at 8 mm.
I always verify this to avoid compatibility issues.
Look for Precision and Tolerance
For projects requiring exact hole sizes, I look for drill bits with tight manufacturing tolerances. This ensures the hole is precisely 8 mm. Some higher-quality bits specify +/- 0.01 mm tolerance, which I found critical for metalworking or mechanical parts.
Set Your Budget and Consider Value
I found there’s a wide price range for 8 mm drill bits. While cheaper bits can work for occasional use, investing in a quality bit pays off in durability and performance. I recommend choosing a trusted brand or a set that includes multiple sizes for versatility.
Additional Tips from My Experience
- Buy in Sets: Sometimes it’s more economical to buy a set that includes 8 mm than purchasing single bits.
- Keep Spare Bits: Drill bits wear out, so having backups saves downtime.
- Use Proper Drilling Speed: Matching speed to material extends bit life.
- Lubricate for Metal Drilling: I always use cutting oil to reduce heat and wear.
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I hope my buying guide helps you find the perfect 8 mm drill bit for your projects. Choosing the right bit makes drilling easier, faster, and more accurate!
Author Profile
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I’m Bruce Toman, though many may know me by my former name in the hospitality world, Bruce Caplan. My journey began in Baltimore, but it was Florida that gave shape to my passion for creating meaningful experiences through food and connection. I moved to the Tampa Bay area and opened a bicycle shop in St. Pete Beach. That little shop led me to bartending, and eventually, to something much bigger my own restaurant.
Since then, I’ve shifted from serving meals to serving insights. I now write a blog focused on personal product analysis and first-hand usage reviews. The same attention I once gave to crafting a perfect steak Diane, I now give to reviewing kitchen tools, home essentials, and lifestyle products that actually deliver. I cover everything from cooking gadgets to everyday items I wish someone had told me about sooner. If I’ve learned anything from a lifetime of service, it’s that trust matters and I bring that same trust to every review I publish.
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