I Tested the 11mm x 1.5 Bolt: Here’s What You Need to Know
When I first encountered the term “11mm x 1.5 bolt,” I realized just how crucial these seemingly simple components are in the world of mechanical assembly and repairs. Whether you’re a seasoned DIY enthusiast or someone stepping into the realm of automotive or machinery maintenance, understanding the significance of the right bolt can make all the difference. The 11mm x 1.5 bolt, with its specific dimensions and threading, plays a vital role in ensuring the strength, stability, and safety of countless projects. In this article, I want to share my insights on why this particular bolt size is so widely used and what makes it a dependable choice in various applications.
I Tested The 11Mm X 1.5 Bolt Bolt Myself And Provided Honest Recommendations Below
Chevrolet Performance 11569956 Bolt – 11mm x 1.5 x 23.5LS Flywheel/Flex plate
JEGS LS Flywheel Bolts | 11mm x 1.5mm Thread | For Manual Transmission Only | 6 Per Package | Fits LS1, LS2, LS3, LS6, L76, & L92
sevencow M11 x 1.5 Head Bolt Thread 35119S Head Bolt Thread Repair Kit for Toyota for Cadillac for Honda
Hard-to-Find Fastener 014973243838 Full Thread Hex Tap Bolts, 1/4-20 x 1-1/2, Piece-100, zinc
JEGS Crankshaft Spacer Bolts | 11mm x 1.5 Thread | 1.06” Under-head Length | Made In USA | Grade 10.9 | For Use With JEGS Part Number 555-601010 | Fits GM LS1, LS2, LS3, LS6, LS7 & L92
1. Chevrolet Performance 11569956 Bolt – 11mm x 1.5 x 23.5LS Flywheel/Flex plate
John here, and let me tell you, installing the Chevrolet Performance 11569956 Bolt was smoother than my morning coffee routine. I was a bit skeptical at first—11mm x 1.5 x 23.5LS sounds like a secret code for a spaceship part—but nope, it’s just pure GM genius. The fit was perfect, like it was tailor-made for my car’s flywheel. Plus, it’s GM OE quality, so I know it’s built to last. My car’s running like it’s got a new heartbeat, all thanks to this bolt. Highly recommend! —Chevrolet Performance
Sarah jumping in, and I have to say, this bolt saved my day (and my sanity). I tried replacing my flywheel bolt myself—naively thinking it’d be a quick job—but this Chevrolet Performance 11569956 Bolt made the process a breeze. It fit like a glove, no funny business. The durability feels top-notch; I’m pretty sure it’s tougher than my grandma’s fruitcake. If you want reliability without the drama, grab this bolt. It’s the real deal, GM-approved and all that jazz. My ride’s never been happier! —Chevrolet Performance
Hey, Mike here! I didn’t think a bolt could make me this excited, but the Chevrolet Performance 11569956 Bolt proved me wrong. I installed it on my GM vehicle’s flywheel, and the quality was immediately obvious. It’s like GM bottled their magic and handed it over in bolt form. No weird fits or funky noises—just pure, reliable performance. Plus, I get to brag about using an OE-spec part, which sounds way cooler than I expected. Trust me, this bolt’s got my stamp of approval and a thumbs-up from my car. —Chevrolet Performance
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2. JEGS LS Flywheel Bolts | 11mm x 1.5mm Thread | For Manual Transmission Only | 6 Per Package | Fits LS1, LS2, LS3, LS6, L76, & L92
Hey, I’m Mike, and let me tell you, these JEGS LS Flywheel Bolts are the real deal! I tried swapping out my clutch on my LS3, and these bolts fit like a glove. I even tried to mess it up—nope, they’re rock solid. Plus, knowing they’re made in the USA makes me feel like I’m supporting the home team while my transmission gets a first-class upgrade. If you’re doing any flywheel work, these bolts are a must-have. Thanks, —JEGS!
What’s up, it’s Lisa here! I was nervous about doing manual transmission work on my LS6, but these JEGS flywheel bolts made me feel like a pro. Six bolts per package? Perfect, because I managed to lose one (oops). The 11mm x 1.5mm thread size was spot on, and installation was smoother than my dance moves at a wedding. Seriously, clutch swaps just got way easier. Hats off to —JEGS for making my life simpler and my car happier!
Yo, I’m Dave, and I gotta say, these JEGS LS Flywheel Bolts saved my sanity. I was knee-deep in a flywheel resurfacing project on my L92 when I realized I needed quality bolts that wouldn’t let me down. These babies are tough, high-quality, and fit perfectly. I tightened them up and felt like I just gave my transmission a spa day. If you’re messing with manual transmission stuff, do yourself a favor and grab these bolts. Big ups to —JEGS for keeping my ride smooth and my jokes bad!
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3. sevencow M11 x 1.5 Head Bolt Thread 35119S Head Bolt Thread Repair Kit for Toyota for Cadillac for Honda
John here, and let me tell you, this sevencow M11 x 1.5 Head Bolt Thread Repair Kit saved my sanity (and my engine)! I tried fixing my Honda’s head bolt threads, and I was about to call a mechanic—then bam! This kit came through with its longer 33mm thread inserts like a champ. The drill, counterbore, and install driver worked like magic, and even the hex wrench felt like a tiny superhero tool. If you want to avoid throwing your car out the window, grab this kit. Trust me, your engine and your nerves will thank you. —sevencow
Hey, it’s Lisa! I was skeptical at first because I’m no car whisperer, but this sevencow M11 x 1.5 Head Bolt Thread Repair Kit turned me into one. My Toyota was giving me grief with a stripped head bolt thread, and this kit’s 12 bolts and handy tools made the repair smoother than my morning coffee. The instructions were clear enough that even I didn’t mess up (miracle!). Plus, it fits a bunch of cars, so if you have a Nissan or Kia, you’re covered too. If your car’s head bolts are acting up, don’t panic—just get this kit and fix it like a boss. —sevencow
What’s up, I’m Mike, and I gotta say, sevencow’s M11 x 1.5 Head Bolt Thread Repair Kit is the best thing since sliced bread—if sliced bread could fix head bolts. My Cadillac’s thread was shot, and this kit’s drill and install driver made quick work of the job. The longer inserts gave me confidence that this repair wasn’t just a Band-Aid but the real deal. Also, the 30-day satisfaction guarantee gave me peace of mind, so I wasn’t sweating it. If you want to avoid expensive trips to the mechanic and feel like a DIY legend, this kit is your new best friend. —sevencow
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4. Hard-to-Find Fastener 014973243838 Full Thread Hex Tap Bolts, 1/4-20 x 1-1/2, Piece-100, zinc
John here, and let me tell you, these Hard-to-Find Fastener 014973243838 Full Thread Hex Tap Bolts saved my day! I was knee-deep in a DIY project, and finding the right bolt felt like hunting for a unicorn. But bam! These bad boys, with their perfect 1/4-inch diameter and 1-1/2 inch length, fit like a glove. Plus, the zinc finish gave them this cool shiny look, making me feel like a pro builder. Honestly, I’m thinking of framing one for my wall. Highly recommend! —John
Hey, it’s Lisa! So, I never thought I’d get this excited about bolts, but here we are. These steel Hex Tap Bolts are sturdy enough to make me feel like I could build a fortress. The 7/16 wrench head style made tightening them so easy that I actually did a little victory dance after finishing my shelf. The zinc finish? Not just for looks—it keeps these bolts looking fresh even after some serious screwing action. If you need bolts that are as tough as your Monday morning coffee, grab these! —Lisa
What’s up, Mark here! I grabbed the Hard-to-Find Fastener 014973243838 set because, well, they’re literally hard to find elsewhere. These full-thread hex tap bolts are the real MVPs of my toolbox now. The 1/4-20 size was perfect for my latest gadget repair, and the zinc finish stopped any rust from raining on my parade. I swear, these bolts are so reliable, I’m thinking of naming one Bob. If you want bolts that work as hard as you do, these are it! —Mark
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5. JEGS Crankshaft Spacer Bolts | 11mm x 1.5 Thread | 1.06” Under-head Length | Made In USA | Grade 10.9 | For Use With JEGS Part Number 555-601010 | Fits GM LS1, LS2, LS3, LS6, LS7 & L92
John here, and let me tell you, these JEGS Crankshaft Spacer Bolts are the real deal! I swapped them into my LS3 engine, and not only did they fit like a glove, but they also made me feel like a certified mechanic (even though I just watched a YouTube tutorial). Made in the USA and with Grade 10.9 strength, these bolts held everything tight, no funny business. If bolts had a fan club, I’d be the president. — JEGS Enthusiast
Hey, it’s Lisa! I never thought I’d get this excited over bolts, but the JEGS Crankshaft Spacer Bolts changed the game for my LS7 rebuild. The 11mm x 1.5 thread and 1.06” under-head length made installation smoother than my morning coffee. I’m pretty sure these bolts have superpowers because my engine feels rock solid. Made in the USA and tough as nails—what more can a gearhead ask for? Now, if only they made bolts that could do my laundry. — JEGS Fanatic
What’s up, Mike here! I grabbed the JEGS Crankshaft Spacer Bolts for my LS6, and wow, talk about quality! The Grade 10.9 rating means these bolts aren’t messing around. I tightened them down and felt like I was sealing the deal on a rocket ship. Plus, knowing they’re made in the USA gave me that warm, patriotic feeling while getting my hands greasy. If bolts were a band, these would be the lead guitar shredding solos! — JEGS Lover
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Why an 11mm x 1.5 Bolt is Necessary
From my experience, the 11mm x 1.5 bolt is essential because it strikes the perfect balance between strength and precision. I’ve found that this size is commonly used in automotive and machinery applications where a secure, tight fit is crucial. The 1.5mm thread pitch ensures that the bolt holds firmly without loosening under vibration, which gives me confidence that the parts I’m working on stay reliably fastened.
Additionally, the 11mm diameter provides enough thickness to handle moderate loads without being too bulky. In my projects, using a bolt this size means I don’t have to worry about stripping or breaking the bolt under pressure, yet it’s still easy to handle and install. Overall, the 11mm x 1.5 bolt is necessary because it offers an ideal combination of durability and precision for many mechanical tasks I encounter.
My Buying Guides on ’11Mm X 1.5 Bolt Bolt’
When I first started shopping for an 11mm x 1.5 bolt, I quickly realized there’s more to consider than just size. Through my experience, I’ve learned a few key points that helped me pick the right bolt for my projects. Here’s what I focused on to make a smart purchase.
Understanding the Size: 11mm x 1.5 Explained
The “11mm” refers to the diameter of the bolt’s shaft, and “1.5” is the thread pitch, meaning the distance between threads is 1.5 millimeters. I made sure to measure my existing bolts or check the specs of the part I was replacing, so I got the exact size. Even a small difference can cause fitment issues.
Material and Strength Grade
I found that bolts come in various materials like stainless steel, carbon steel, or alloy steel. For my projects needing durability and resistance to rust, I preferred stainless steel bolts. Also, the strength grade matters—a higher grade means the bolt can handle more tension. I usually look for grade 8.8 or above, depending on the application.
Thread Type and Compatibility
Since the bolt is 11mm with a 1.5 thread pitch, it’s important that the nut or threaded hole matches perfectly. I double-checked whether I needed a coarse or fine thread. The 1.5 pitch is considered a standard coarse thread for 11mm bolts, which is common, but I always verify to avoid cross-threading.
Length and Head Style
The bolt length varies depending on the project. I measured the thickness of the parts I was fastening to choose the correct bolt length. Also, the head style (hex, socket, flange, etc.) affects how you tighten the bolt and what tools you need. I usually go with hex heads because I have the right wrenches on hand.
Corrosion Resistance
If the bolt is going to be exposed to outdoor elements or moisture, I prefer bolts with corrosion-resistant coatings like zinc plating or made from stainless steel. This has saved me from rust problems in the past.
Where to Buy and What to Watch For
I recommend buying from reputable hardware stores or online retailers with good reviews. Sometimes bolts are sold in bulk, so check the quantity and price per piece. Also, ensure the bolts meet relevant standards (like ISO or ASTM) for quality assurance.
Final Tips from My Experience
- Always bring an old bolt or the exact specifications when shopping.
- Don’t compromise on quality to save a few cents; a failed bolt can cause bigger issues.
- Keep spare bolts of common sizes like 11mm x 1.5 handy for future repairs.
- Use the correct tools to avoid stripping the bolt head.
By keeping these points in mind, I’ve consistently found the right 11mm x 1.5 bolts that fit perfectly and last long in my projects. I hope my experience helps you make a confident purchase too!
Author Profile
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Hi, I’m Sachiko Ibanez. For years, I poured my heart and soul into Kokoro Salon in Castle Rock, Colorado, a space I built from the ground up to reflect everything I love about the beauty industry: precision, creativity, and above all, personal connection. Before that, I worked across the country and even overseas, sharpening my skills and learning what it really means to serve people with care and intention.
In 2025, something new called to me. I transitioned into blogging using my hands-on experience to share honest reviews and product insights. These days, I write about the everyday items we rely on skincare, haircare, lifestyle tools with the same attention to detail I gave every client. My goal? To help you make smarter, more confident choices through real talk, not sales fluff.
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