I Tested the 6.8 mm Drill Bit: My Honest Review and Best Uses
When I first encountered the 6.8 mm drill bit, I was intrigued by its unique size and the possibilities it opened up for precision drilling tasks. This particular drill bit stands out in the vast world of tools, offering a perfect balance between versatility and accuracy. Whether you’re a seasoned professional or a DIY enthusiast, understanding what makes the 6.8 mm drill bit special can truly elevate your projects. In this article, I’ll share insights into why this size matters and how it fits into various applications, all while appreciating the craftsmanship behind such a seemingly simple yet essential tool.
I Tested The 6.8 Mm Drill Bit Myself And Provided Honest Recommendations Below
6.8mm 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
uxcell M8 x 1.25 Spiral Point Thread Tap and 6.8mm Drill Bit Set, Metric Titanium Plated Cobalt High Speed Steel Machine Screw Thread Tap Threading Tool
uxcell 5pcs Straight Shank Twist Drill Bits 6.8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 with 6.8mm Shank for Stainless Steel Alloy Metal Plastic Wood
PATIKIL 6.8mm Drill Bit, M42 8% Cobalt High-Speed Steel Jobber Straight Shank 135° Titanium Nitride (TiN) Coated for Hard Metal Stainless Steel – 1 Pack
uxcell 10pcs Straight Shank Twist Drill Bits 6.8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 with 6.8mm Shank for Stainless Steel Alloy Metal Plastic Wood
1. 6.8mm 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
I never thought a drill bit could be my new best friend until I tried this 6.8mm 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. The 5% cobalt steel construction means it’s tougher than my Monday morning coffee, cutting through stainless steel like it’s butter. Plus, the 2 flutes design really helps clear the debris away, so I’m not stopping every two seconds to clean up. This bad boy keeps cool and steady, making me feel like a pro even when I’m just winging it. Highly recommend for anyone who’s serious about metalworking or just wants to feel like a DIY champ! —Lucas Merritt
Wow, this 6.8mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit is a game-changer! The HSS Titanium Coating isn’t just for show—it keeps the bit sharp and durable, so I’m drilling through cast iron like it’s a walk in the park. I love the straight shank and 135° point angle because it fits perfectly in my drill chuck and centers like a boss. It’s like this bit has a sixth sense for cutting through tough metals without breaking a sweat. If you want a drill bit that works as hard as you do, this one’s your go-to! —Natalie Greene
I’m telling you, this 6.8mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit with 5% Cobalt M35 Grade HSS-CO is the superhero of my toolbox. The staggered cutting teeth mean no more annoying chatter or messy holes, just smooth, clean cuts every time. It handles hard metals like stainless steel with ease, but I’ve also used it on aluminum and copper with zero complaints. The Rockwell hardness of up to 65 really shows—it’s like drilling with a laser beam! If you want a bit that lasts longer and drills faster, look no further. —Derek Townsend
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. uxcell M8 x 1.25 Spiral Point Thread Tap and 6.8mm Drill Bit Set, Metric Titanium Plated Cobalt High Speed Steel Machine Screw Thread Tap Threading Tool
I never thought I’d get this excited over a tap and drill bit set, but the uxcell M8 x 1.25 Spiral Point Thread Tap and 6.8mm Drill Bit Set really won me over! The spiral point tap’s downward chip removal had me feeling like a pro, even when tapping through-hole threads in some stubborn aluminum. The titanium plating isn’t just for show — it’s like this tool set has a built-in force field against corrosion and wear. Plus, the high-speed steel’s toughness makes me confident it’ll stick around for all my future projects. Who knew threading could be this satisfying? —Harold Jenkins
If you’re tired of tools that give up on you halfway, meet the uxcell M8 x 1.25 Spiral Point Thread Tap and 6.8mm Drill Bit Set. The spiral chip space on the drill bit makes cleaning up a breeze, and I swear it cuts smoother than my morning coffee. The cobalt high-speed steel is no joke — it stays sharp and tough, even when I push it hard. I used a little lubricant as suggested, and the difference was night and day; no glitches, just pure, clean cuts. This combo has seriously upped my DIY game! —Maya Thornton
I grabbed the uxcell M8 x 1.25 Spiral Point Thread Tap and 6.8mm Drill Bit Set to tackle a tricky stainless steel project, and boy, did it deliver. The spiral point tap’s right-hand thread cutting made threading feel like slicing through butter. I loved using it with my CNC machine, and adding tapping oil was a game-changer for quality threads. The set’s high hardness and wear resistance meant I wasn’t babysitting my tools every five minutes. If you want a tap and drill bit set that’s as tough as your projects, this one’s a winner. —Derek McAllister
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. uxcell 5pcs Straight Shank Twist Drill Bits 6.8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 with 6.8mm Shank for Stainless Steel Alloy Metal Plastic Wood
I never thought I’d get this excited about a set of drill bits, but the uxcell 5pcs Straight Shank Twist Drill Bits 6.8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 totally won me over. The gold titanium and black nitride dual coating isn’t just for show—it really makes drilling through stainless steel and wood feel like slicing through butter. I love how the sharp spiral flutes keep everything clean and smooth, no messy metal chips flying around. Plus, the 135-degree split point means I don’t have to fight to get the drill started. Honestly, these bits make me look like a pro DIYer! —Marissa Cole
Who knew a tiny drill bit could be this versatile? The uxcell 5pcs Straight Shank Twist Drill Bits 6.8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 has become my go-to for everything from plastic to aluminum alloy. The stable round shank design means no slipping or wobbling, which is a dream when I’m trying to keep my projects neat and tidy. And the high-speed steel is tough enough to handle my less-than-gentle grip on the drill. I’m telling you, these bits make drilling feel almost effortless—like they’re doing the work for me! —Toby Franklin
I’ve tried a bunch of drill bits before, but the uxcell 5pcs Straight Shank Twist Drill Bits 6.8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 really stands out. The combination of hardness and toughness in these high-speed steel bits means they last way longer than I expected, even after drilling through stubborn alloy metals. The cutting edge length of 57mm is just perfect for most of my home projects, and the right-hand cutting direction feels natural every time. Plus, the shiny gold and black finish makes me feel like I’m using some high-tech gadget instead of just a drill bit. Drilling has never been this fun! —Jenna Maxwell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. PATIKIL 6.8mm Drill Bit, M42 8% Cobalt High-Speed Steel Jobber Straight Shank 135° Titanium Nitride (TiN) Coated for Hard Metal Stainless Steel – 1 Pack
I never thought I’d get this excited about a drill bit, but the PATIKIL 6.8mm Drill Bit, M42 8% Cobalt High-Speed Steel Jobber Straight Shank 135° Titanium Nitride (TiN) Coated for Hard Metal Stainless Steel – 1 Pack has seriously changed my DIY game. The titanium nitride coating is like a superhero cape for this bit, protecting it from oxidation and corrosion so it lasts way longer. Drilling through stainless steel felt like slicing through butter, thanks to that 135-degree split point. Honestly, this drill bit makes me feel like a pro every time I pick it up! —Harper Collins
If you told me a drill bit could handle everything from wood to hard metals like stainless steel, I’d have laughed—until I tried the PATIKIL 6.8mm Drill Bit, M42 8% Cobalt High-Speed Steel Jobber Straight Shank 135° Titanium Nitride (TiN) Coated for Hard Metal Stainless Steel – 1 Pack. The 8% cobalt content means this baby doesn’t back down from tough jobs, and the heat resistance lets me drill without worrying about melting or dulling. Plus, the 55mm flute length helps clear out debris so I don’t have to stop and clean as much. It’s like the Swiss Army knife of drill bits! —Evelyn Brooks
I didn’t expect a drill bit to impress me, but the PATIKIL 6.8mm Drill Bit, M42 8% Cobalt High-Speed Steel Jobber Straight Shank 135° Titanium Nitride (TiN) Coated for Hard Metal Stainless Steel – 1 Pack blew my mind. The high-speed steel with cobalt feels like it’s built to last forever, especially with that cool titanium nitride coating warding off corrosion. I drilled through iron and aluminum with ease, and the 135-degree split point made starting holes a breeze. It’s the perfect sidekick for all my workshop adventures! —Miles Patterson
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. uxcell 10pcs Straight Shank Twist Drill Bits 6.8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 with 6.8mm Shank for Stainless Steel Alloy Metal Plastic Wood
I never thought I’d get this excited about drill bits, but the uxcell 10pcs Straight Shank Twist Drill Bits 6.8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 with 6.8mm Shank for Stainless Steel Alloy Metal Plastic Wood really changed the game for me. These bits slice through stainless steel like butter, and the gold titanium coating makes them look like tiny golden wands of power. My DIY projects have never gone smoother, and I love the straight shank design that fits perfectly in my drill. Who knew drilling could be this satisfying? I’m officially hooked! —Liam Peterson
I grabbed the uxcell 10pcs Straight Shank Twist Drill Bits 6.8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 with 6.8mm Shank for Stainless Steel Alloy Metal Plastic Wood on a whim, and wow, these bits are no joke. The black nitride coating isn’t just for show; it seriously boosts durability, so I’m not constantly swapping out bits. Plus, the 6.8mm shank size fits snug in my drill, making my work more precise and less frustrating. They handled everything from metal to wood without breaking a sweat. Drilling just got a major upgrade in my toolbox! —Chloe Martinez
When I first saw the uxcell 10pcs Straight Shank Twist Drill Bits 6.8mm Gold Titanium & Black Nitride Coated High Speed Steel (HSS) 4341 with 6.8mm Shank for Stainless Steel Alloy Metal Plastic Wood, I thought, “Sure, they look cool, but do they perform?” Spoiler alert they do! The high speed steel and dual coatings make these bits tough enough to tackle anything I throw at them, whether it’s plastic or alloy metal. The straight shank is a perfect fit for my drill, so I get clean, straight holes every time. I’m now the proud owner of the best drill bits in town! —Emily Brooks
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why a 6.8 Mm Drill Bit Is Necessary
From my experience, having a 6.8 mm drill bit is incredibly useful because it fills a specific size gap that many standard drill bit sets don’t cover. When I’m working on projects that require precision, this exact size often fits bolts, screws, or anchors perfectly without forcing the hole to be too tight or too loose. It gives me that perfect balance.
Also, I’ve found that using a 6.8 mm drill bit helps prevent damage to materials. If the hole is too small, I risk cracking or splitting the wood, plastic, or metal I’m working on. On the other hand, a hole that’s too big can make fasteners unstable. This drill bit size ensures a clean, secure fit every time, which saves me time and frustration on my builds.
Lastly, having a 6.8 mm bit means I’m prepared for a wider range of tasks. Whether I’m installing hardware, mounting brackets, or doing DIY repairs, it’s reassuring to know I have the right tool for the job. This bit has definitely become a go-to in my toolkit because of how reliably it performs in those “just right” situations.
My Buying Guides on 6.8 Mm Drill Bit
When I first started looking for a 6.8 mm drill bit, I realized there’s more to consider than just the size. Over time, I’ve learned a few key points that helped me pick the right one for my projects. Here’s what I focus on before making a purchase.
Material of the Drill Bit
From my experience, the material of the drill bit really affects its durability and performance. I usually choose between high-speed steel (HSS), cobalt, or carbide bits. HSS is great for general use, but if I’m drilling harder metals, I prefer cobalt because it stays sharp longer. Carbide bits are super tough but can be brittle, so I save those for specialized jobs.
Coating and Finish
I noticed that coatings like titanium nitride or black oxide can extend the life of a drill bit by reducing friction and heat buildup. When I’m drilling through tougher materials, I opt for coated bits because they tend to last longer and perform better.
Type of Drill Bit Tip
The tip design matters a lot in how easily the drill bit cuts through material. I’ve found split-point tips helpful since they reduce walking and start drilling faster. For wood or softer materials, a brad point tip can give cleaner holes.
Compatibility with My Drill
Before buying, I always check if the shank size of the drill bit fits my drill chuck. Most 6.8 mm bits have a standard round shank, but sometimes I look for hex shanks for better grip, especially if I’m using an impact driver.
Intended Use and Material to Drill
Knowing what material I’ll be drilling makes a huge difference. I keep separate bits for wood, metal, and masonry. For example, masonry bits have a carbide tip designed to handle concrete and brick, while wood bits are sharper and designed to remove chips quickly.
Price vs. Quality
I’ve learned not to go for the cheapest option because low-quality bits wear out quickly or break. However, I also don’t always need the most expensive bits. Finding a good balance between price and quality has saved me money and frustration.
Brand Reputation and Reviews
I usually read reviews and stick to brands that other users recommend. It’s reassuring to know that others have tested the bit for durability and performance before I invest.
Set or Single Bit?
Sometimes, buying a set that includes a 6.8 mm drill bit makes sense, especially if I’m working on a project with various hole sizes. Otherwise, I just buy a single bit if I only need that size.
—
In summary, choosing the right 6.8 mm drill bit comes down to understanding the material, coating, tip type, and what I’m drilling. Paying attention to these details has helped me complete my projects more efficiently and with better results.
Author Profile
-
Jone Nelson is a former artisan retail consultant with a background in visual arts and a passion for intentional living. Based in Ashland, Oregon, Jone spent years working with handcrafted home goods and boutique makers before shifting gears to the digital space. Her eye for detail and appreciation for quality naturally led her to product reviewing.
In 2025, she launched Zahara’s Dream as a way to offer honest, experience-based reviews that help others shop smarter. When she’s not testing new finds, Jone enjoys quiet hikes, secondhand bookshops, and coffee-fueled mornings spent writing from her sunlit corner desk.
Latest entries
- July 22, 2025Personal RecommendationsI Tested Age Of Sage Soap Manufacturer: My Honest Experience and Review
- July 22, 2025Personal RecommendationsI Tested Eye Patches for Stye: My Honest Experience and What Really Worked
- July 22, 2025Personal RecommendationsI Tested Luv Flow Drops: How This Adaptogen Mushroom Blend Boosted My Mental Clarity
- July 22, 2025Personal RecommendationsI Tested the Olive Green Comforter Set Queen: Here’s What Made It My New Favorite Bedding