Looking for the best automotive bolts? We’ve tested and reviewed top-rated bolt kits to help you find the perfect fit for your vehicle repairs and upgrades.
Automotive bolts are the unsung heroes of vehicle repairs and upgrades. They keep parts secure and reliable, ensuring your car runs smoothly. Choosing the right bolts can make all the difference in your projects.
Finding the perfect bolts can be tricky. With so many sizes and materials, it’s easy to feel overwhelmed. But don’t worry—we’ve got you covered with the best options available.
We’ve tested and reviewed top-rated bolt kits to save you time. From durable materials to easy organization, these kits are built to last. Get ready to tackle any automotive task with confidence!
List of Top 10 Automotive Bolts
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Besitu 280Pcs Metric Flange Bolt Assortment, M6x1.0, M8x1.25, M10x1.5 (12mm to 30mm) Assorted Hex Bolts and Nuts Washers Kit for Automotive, 10.9 Black Zinc Galvanized |
This Besitu 280Pcs Metric Flange Bolt Assortment is perfect for DIY enthusiasts and automotive professionals. It’s ideal for anyone working on home improvement or engineering projects that need strong, reliable bolts. |
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FOLIV 907pcs Grade 8.8 Metric Bolt Assortment, M4 M5 M6 M8 Heavy Duty Bolts and Nuts Kit, Yellow Zinc Plated, Length from 12-30mm |
This bolt assortment kit is perfect for anyone who needs strong, reliable fasteners for DIY projects, repairs, or professional work. Whether you’re fixing machinery, furniture, or vehicles, this kit has you covered with its heavy-duty Grade 8 bolts and organized storage box. |
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304Pcs Metric Flange Bolt and Nut Assortment, M6x1.0, M8x1.25 (12mm to 30mm) Assorted Hex Bolts and Nuts Washers Kit for Automotive, 10.9 Black Zinc Galvanized |
This 304-piece metric flange bolt and nut kit is perfect for anyone working on cars, machinery, or equipment. It’s ideal for automotive repairs, maintenance, and assembly projects. |
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UBOG 30PCS Fender Bolts, Bumper Screws, Splash Shield Fasteners, Compatible with ES300h, ES350, Replace #90159-60498 90159-T0034 |
Car owners and mechanics who need reliable fender bolts for Lexus models will love these UBOG 30PCS Fender Bolts. They are easy to install and built to last. |
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mankk 400PCS Metric Grade 10.9 Flange Bolts and Nuts Assortment Kit M6x1.0, M8x1.25, M10x1.5 (12mm to 45mm) Black Alloy Steel Class Hex Bolts and Nuts Washers Kit for Automotive |
This 400-piece flange bolt kit is perfect for anyone working on cars, machinery, or building projects. It’s great for mechanics, DIY enthusiasts, or professionals who need strong, reliable bolts in common sizes. |
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Bonost 3010pcs Hardware Assortment Kit with Assorted SAE & Metric Phillips Head Bolts, and Grade 8.8 Metric Hex Bolt Set with Matching Nuts and Lock Washers (4 Trays) |
This hardware assortment kit is perfect for anyone who needs a reliable and organized set of bolts, nuts, and washers. Whether you’re a DIY enthusiast, a homeowner, or a professional, this kit has everything you need for repairs and projects. |
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Taiss 3160PCS Metric Flange Bolt Assortment Kit,Nuts and Bolts Assortment Kit M2 M3 M4 M5 M6x1.0 M8x1.25 M10x1.5 Bolt(4-45mm) 42 Sizes Hex Socket Button & Cap Head Metric Screw 10.9 Black Zinc Plated |
This 3160-piece metric bolt kit is perfect for anyone who needs a wide variety of bolts for DIY projects, repairs, or professional work. It’s ideal for mechanics, hobbyists, and anyone working with machinery, cars, or furniture. |
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50 Pcs Automotive Body Bolts/Screws & U-Nut Clips Kit, Multipurpose Fender Bolts and Body Fastener Clips for Most Cars, Bumper, Engine Splash Shield, and Fender Liner |
This 50-piece kit is perfect for car owners and DIY enthusiasts who need a reliable and versatile solution for securing underbody and body panels. It’s ideal for replacing worn-out fasteners on fenders, bumpers, splash shields, and more. |
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INCLY 300PCS Black Metric Flange Bolt Assortment, M6x1.0, M8x1.25, M10x1.5 Bolt (12mm to 30mm) Assorted Hex Bolts and Nuts Washers Kit for Automotive, Home Improvement, Grade 10.9 Black Zinc Plated |
This INCLY 300PCS Black Metric Flange Bolt Assortment is perfect for anyone who loves DIY projects, automotive repairs, or home improvement. Whether you’re fixing a motorcycle, working on furniture, or tackling appliance repairs, this kit has everything you need. |
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Hapric 384 Pcs Metric Flange Bolt Assortment Kits, M6x1.0, M8x1.25, M10x1.5 Bolts(12mm to 30mm) Grade 10.9 Alloy Steel Metric Machine Screws Nuts and Bolts Kit |
This nuts and bolts kit is perfect for anyone who needs strong, reliable fasteners for car repairs, motorcycle maintenance, or DIY projects. It’s easy to use and store, making it ideal for both professionals and hobbyists. |
Detailed Reviews
Discover the top 10 Automotive Bolts in this expert-reviewed guide. Each product is chosen for its quality, durability, and value, ensuring you find the perfect fit. Whether you need high-strength bolts for tough jobs or rust-resistant fasteners for long-lasting use, this guide has you covered. Read on to find the best automotive bolts tailored to your needs.
1. Besitu 280Pcs Metric Flange Bolt Assortment, M6x1.0, M8x1.25, M10x1.5 (12mm to 30mm) Assorted Hex Bolts and Nuts Washers Kit for Automotive, 10.9 Black Zinc Galvanized

This Besitu 280Pcs Metric Flange Bolt Assortment has many bolt sizes. It includes M6, M8, and M10 bolts with matching nuts and washers. All pieces are fully threaded for a strong fit.
The bolts are made of 10.9 alloy steel and have a black zinc finish. They are strong and safe for high-torque tasks. The kit is perfect for engine work and other tough jobs.
The set comes in a reusable container with labeled compartments. It is easy to find the right size quickly.
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Perfect For:
This Besitu 280Pcs Metric Flange Bolt Assortment is perfect for DIY enthusiasts and automotive professionals. It’s ideal for anyone working on home improvement or engineering projects that need strong, reliable bolts.
Ready to Purchase?
2. FOLIV 907pcs Grade 8.8 Metric Bolt Assortment, M4 M5 M6 M8 Heavy Duty Bolts and Nuts Kit, Yellow Zinc Plated, Length from 12-30mm

FOLIV 907pcs Grade 8.8 Metric Bolt Assortment is a heavy-duty kit. It includes M4, M5, M6, and M8 bolts with matching nuts. The yellow zinc plating adds corrosion resistance.
This kit features high-quality Grade 8 alloy steel. It offers good wear resistance and high hardness. The 30-compartment tool box keeps everything organized.
FOLIV supports environmental education with each purchase. A portion of sales goes to White Memorial Conservation Center Inc., helping protect natural resources.
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Perfect For:
This bolt assortment kit is perfect for anyone who needs strong, reliable fasteners for DIY projects, repairs, or professional work. Whether you’re fixing machinery, furniture, or vehicles, this kit has you covered with its heavy-duty Grade 8 bolts and organized storage box.
Ready to Purchase?
3. 304Pcs Metric Flange Bolt and Nut Assortment, M6x1.0, M8x1.25 (12mm to 30mm) Assorted Hex Bolts and Nuts Washers Kit for Automotive, 10.9 Black Zinc Galvanized

This 304-piece kit includes M6x1.0 and M8x1.25 flange bolts, nuts, and washers. It’s perfect for automotive and mechanical projects. The black zinc finish adds rust protection and durability.
The organized case keeps parts separated for easy access. Its professional design ensures reliable performance in industrial uses.
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Perfect For:
This 304-piece metric flange bolt and nut kit is perfect for anyone working on cars, machinery, or equipment. It’s ideal for automotive repairs, maintenance, and assembly projects.
Ready to Purchase?
4. UBOG 30PCS Fender Bolts, Bumper Screws, Splash Shield Fasteners, Compatible with ES300h, ES350, Replace #90159-60498 90159-T0034

The UBOG 30PCS Fender Bolts are made of high-quality steel. They are rust-proof, corrosion-resistant, and heat-resistant. These bolts are designed to last a long time.
Each screw has a cross-slot hexagonal head for easy installation. You don’t need any extra tools to use them. Simply replace your old fasteners with these bolts.
This set is compatible with a wide range of cars, including ES300h, ES350, and GS F. Be sure to check the size before purchasing.
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Perfect For:
Car owners and mechanics who need reliable fender bolts for Lexus models will love these UBOG 30PCS Fender Bolts. They are easy to install and built to last.
Ready to Purchase?
5. mankk 400PCS Metric Grade 10.9 Flange Bolts and Nuts Assortment Kit M6x1.0, M8x1.25, M10x1.5 (12mm to 45mm) Black Alloy Steel Class Hex Bolts and Nuts Washers Kit for Automotive

The Mankk 400PCS Flange Bolts and Nuts Kit is made of strong alloy steel. The bolts have a black finish and high durability. This kit is safe and reliable for many jobs.
It includes 400 pieces with different sizes. You get bolts, nuts, washers, and elastic sheets.
The bolts are stored in a portable box with dividers. This makes it easy to carry and organize.
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Perfect For:
This 400-piece flange bolt kit is perfect for anyone working on cars, machinery, or building projects. It’s great for mechanics, DIY enthusiasts, or professionals who need strong, reliable bolts in common sizes.
Ready to Purchase?
6. Bonost 3010pcs Hardware Assortment Kit with Assorted SAE & Metric Phillips Head Bolts, and Grade 8.8 Metric Hex Bolt Set with Matching Nuts and Lock Washers (4 Trays)

The Bonost 3010pcs Hardware Assortment Kit is a must-have for any project. It includes SAE and metric bolts, nuts, and washers in various sizes. Everything comes in 4 stackable trays for easy storage.
Made from premium carbon steel, these fasteners are rust-resistant and durable. The zinc coating ensures they last longer, even in tough conditions.
Perfect for DIY projects or home repairs, this kit has small to large sizes. Whether you’re a beginner or a pro, it’s ready to use whenever you need it.
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Perfect For:
This hardware assortment kit is perfect for anyone who needs a reliable and organized set of bolts, nuts, and washers. Whether you’re a DIY enthusiast, a homeowner, or a professional, this kit has everything you need for repairs and projects.
Ready to Purchase?
7. Taiss 3160PCS Metric Flange Bolt Assortment Kit,Nuts and Bolts Assortment Kit M2 M3 M4 M5 M6x1.0 M8x1.25 M10x1.5 Bolt(4-45mm) 42 Sizes Hex Socket Button & Cap Head Metric Screw 10.9 Black Zinc Plated

This Taiss 3160PCS Metric Flange Bolt Assortment Kit has 3160 pieces and 42 sizes. It includes M2 to M10 bolts for most projects.
The kit has multiple head types: Hex Flange, Socket Button, and Cap Head. It comes in a double-layer portable box that is easy to carry and organize.
The flange bolts are strong alloy steel. The screws are black zinc plated. Perfect for DIY, furniture, bicycles, and machines.
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Perfect For:
This 3160-piece metric bolt kit is perfect for anyone who needs a wide variety of bolts for DIY projects, repairs, or professional work. It’s ideal for mechanics, hobbyists, and anyone working with machinery, cars, or furniture.
Ready to Purchase?
8. 50 Pcs Automotive Body Bolts/Screws & U-Nut Clips Kit, Multipurpose Fender Bolts and Body Fastener Clips for Most Cars, Bumper, Engine Splash Shield, and Fender Liner

This 50-piece kit includes body bolts and U-nut clips. It’s perfect for securing engine splash shields and fender liners. Durable and rust-resistant, it’s made for long-lasting use.
The kit is compatible with most cars and includes matched hardware for easy installation. Threaded clips ensure a tight, secure hold.
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Perfect For:
This 50-piece kit is perfect for car owners and DIY enthusiasts who need a reliable and versatile solution for securing underbody and body panels. It’s ideal for replacing worn-out fasteners on fenders, bumpers, splash shields, and more.
Ready to Purchase?
9. INCLY 300PCS Black Metric Flange Bolt Assortment, M6x1.0, M8x1.25, M10x1.5 Bolt (12mm to 30mm) Assorted Hex Bolts and Nuts Washers Kit for Automotive, Home Improvement, Grade 10.9 Black Zinc Plated

This INCLY 300PCS Black Metric Flange Bolt Assortment includes bolts, nuts, and washers in common sizes like M6, M8, and M10. It is made of high-strength 10.9 grade alloy steel with a black galvanized finish for corrosion resistance.
This kit is perfect for automotive projects, home improvement, and mechanical repairs. It comes with a sturdy storage case for easy organization. The parts are clearly labeled and easy to identify.
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Perfect For:
This INCLY 300PCS Black Metric Flange Bolt Assortment is perfect for anyone who loves DIY projects, automotive repairs, or home improvement. Whether you’re fixing a motorcycle, working on furniture, or tackling appliance repairs, this kit has everything you need.
Ready to Purchase?
10. Hapric 384 Pcs Metric Flange Bolt Assortment Kits, M6x1.0, M8x1.25, M10x1.5 Bolts(12mm to 30mm) Grade 10.9 Alloy Steel Metric Machine Screws Nuts and Bolts Kit

This Hapric 384 Pcs Metric Flange Bolt Kit has strong M6, M8, and M10 bolts. Each bolt includes a nut, flat washer, and lock washer.
The bolts are made of durable alloy steel. The flange head keeps them from loosening. The storage box is easy to use.
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Perfect For:
This nuts and bolts kit is perfect for anyone who needs strong, reliable fasteners for car repairs, motorcycle maintenance, or DIY projects. It’s easy to use and store, making it ideal for both professionals and hobbyists.
Ready to Purchase?
Buying Guide
Automotive bolts are key to keeping your car safe and running well. Picking the right ones can make your projects easier and more reliable.
Buying Guide for Best Automotive Bolts
When choosing automotive bolts, think about these key factors:
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Size: Make sure the bolt size matches your project. Common sizes are M6, M8, and M10.
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Material: Look for strong materials like alloy steel. They last longer and handle high torque.
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Finish: A zinc finish adds rust protection. It keeps bolts durable in tough conditions.
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Kit Contents: Check if the kit has nuts, washers, and extras. A complete kit saves time and effort.
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Organization: A storage case with labeled compartments keeps bolts easy to find.
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Compatibility: Ensure bolts fit your car. Check sizes and types before buying.
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Brand and Quality: Choose trusted brands with high ratings. Quality bolts ensure safety and reliability.
With these tips, you’ll find the perfect bolts for your automotive projects. Happy fixing!