Best Grade 8 Fasteners

Looking for the best Grade 8 fasteners for your heavy-duty projects? We’ve curated a list of top-quality kits to help you find the perfect fit for your needs, ensuring unmatched strength and durability for every task.

Grade 8 fasteners are the go-to choice for heavy-duty projects. They offer unmatched strength and durability, making them essential for both professionals and DIY enthusiasts. Whether you’re building, repairing, or upgrading, these fasteners get the job done right.

These kits come in various sizes and configurations, ensuring you have everything you need for any task. From hex bolts to lock nuts, each piece is designed to last and perform under pressure.

Discover the best Grade 8 fasteners that fit your needs and elevate your projects. With top-notch quality and easy organization, you’ll work smarter, not harder. Dive in to find the perfect kit for your next big project!

List of Top 10 Grade 8 Fasteners

Image Title Best For Price
Grade 8 Hex Cap Bolts Screws, Nuts, Washers, Lock Washers Assortment Kit - 574 Pieces! Grade 8 Hex Cap Bolts Screws, Nuts, Washers, Lock Washers Assortment Kit – 574 Pieces!

This 574-piece Grade 8 Hex Cap Bolt Screw, Nut, and Washer Assortment Kit is perfect for DIY enthusiasts and professional mechanics who need heavy-duty fasteners for their projects. It’s ideal for anyone tackling tough jobs where strength and reliability are crucial.

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Fgruh 800PCS SAE Bolts and Nuts Assortment Kit,1/4-20, 5/16-18, 3/8-16, 1/2-13 Grade 8 Heavy Duty Hex Bolts Nuts and Washers Assorted kit,Yellow Zinc Plated Fgruh 800PCS SAE Bolts and Nuts Assortment Kit,1/4-20, 5/16-18, 3/8-16, 1/2-13 Grade 8 Heavy Duty Hex Bolts Nuts and Washers Assorted kit,Yellow Zinc Plated

This 800-piece SAE bolts and nuts kit is perfect for anyone who needs reliable, heavy-duty hardware for home repairs, DIY projects, or professional work. Whether you’re fixing appliances, machinery, or vehicles, this organized kit has everything you need, saving you time and money.

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M&M Fasteners 2,510 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt & Washer Assortment Kit (Fasteners Only) M&M Fasteners 2,510 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt & Washer Assortment Kit (Fasteners Only)

This M&M Fasteners kit is perfect for anyone who needs a reliable supply of high-quality bolts, nuts, and washers. Whether you’re a DIY enthusiast, a professional mechanic, or a small business owner, this assortment has you covered with 2,510 pieces in common sizes.

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M&M Fasteners 1,250 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt Hex Head Cap Screw & Washer Assortment with Metal Drawer M&M Fasteners 1,250 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt Hex Head Cap Screw & Washer Assortment with Metal Drawer

This 1,250-piece Grade 8 fastener assortment is perfect for DIYers and professionals who need a wide variety of bolts, nuts, and washers for their projects, all neatly organized in a durable metal drawer.

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M&M Fasteners 5,170 Piece Grade 8 Coarse Thread Hex Bolt, Hex Nut, Lock Washer, Flat Washer & Nylon Insert Nut Assortment Kit with 2 Metal Bolt Bins M&M Fasteners 5,170 Piece Grade 8 Coarse Thread Hex Bolt, Hex Nut, Lock Washer, Flat Washer & Nylon Insert Nut Assortment Kit with 2 Metal Bolt Bins

This massive 5,170-piece assortment kit is perfect for serious DIYers, mechanics, and construction professionals who need a huge variety of high-quality Grade 8 fasteners on hand for any project. With all the essential sizes and hardware you’ll ever need, plus two handy organizer bins, you’ll be ready to tackle any job with confidence.

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M&M Fasteners 1,250 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt & Washer Assortment Kit M&M Fasteners 1,250 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt & Washer Assortment Kit

This M&M Fasteners 1,250 Piece Assortment Kit is perfect for DIY enthusiasts and professional contractors who need a wide variety of strong, reliable fasteners for any project. With all the essential sizes and clear labeling, you’ll save time and effort finding exactly what you need.

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2,510 Piece Grade 8 Coarse Thread Nut Bolt Washer Assortment Kit, Hex Bolts, Hex Nuts, Lock and Flat Washers with Metal Bolt Bin Kit 2,510 Piece Grade 8 Coarse Thread Nut Bolt Washer Assortment Kit, Hex Bolts, Hex Nuts, Lock and Flat Washers with Metal Bolt Bin Kit

This 2,510-piece kit is perfect for anyone who needs a reliable supply of high-quality fasteners. Whether you’re a DIY enthusiast, professional mechanic, or handy homeowner, this assortment of grade 8 coarse thread bolts, nuts, and washers has you covered.

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Hard to Find Fastener Yellow Zinc Grade 8 Lock Nuts, Durable Fasteners for Home Improvement, DIY, Construction, 5/8-11 Coarse, Pack of 10 Hard to Find Fastener Yellow Zinc Grade 8 Lock Nuts, Durable Fasteners for Home Improvement, DIY, Construction, 5/8-11 Coarse, Pack of 10

These Hard to Find Fastener Yellow Zinc Grade 8 Lock Nuts are perfect for DIY enthusiasts, home improvement projects, and construction professionals who demand unwavering strength and reliable security in their builds. They ensure your projects stay tight and secure, no matter the challenge.

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Hard-to-Find Fastener 014973252137 Grade 8 Coarse Hex Cap Screws, 3/8-16 x 1-Inch, 50-Piece Hard-to-Find Fastener 014973252137 Grade 8 Coarse Hex Cap Screws, 3/8-16 x 1-Inch, 50-Piece

This product is perfect for DIY enthusiasts and professional builders who need strong, reliable fasteners for their projects.

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Titan 5,445 pcs Grade 8 Coarse Hardware Assortment Kit with Hex Cap Screws, Hex Nuts, Nylon Locknuts & Washers- Fasteners Only Titan 5,445 pcs Grade 8 Coarse Hardware Assortment Kit with Hex Cap Screws, Hex Nuts, Nylon Locknuts & Washers- Fasteners Only

This Titan 5,445 pcs Grade 8 Coarse Hardware Assortment Kit is perfect for anyone who needs a huge selection of fasteners for any project, big or small. With tons of sizes and easy organization, you’ll always have the right bolt, nut, or washer at your fingertips.

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Detailed Reviews

Discover the top 10 Grade 8 Fasteners handpicked for strength and durability. Each product is expert-reviewed and backed by customer feedback, ensuring you get the best value. Whether you’re a pro or a DIY enthusiast, this guide helps you find the perfect fit for your projects.

1. Grade 8 Hex Cap Bolts Screws, Nuts, Washers, Lock Washers Assortment Kit – 574 Pieces!

Grade 8 Hex Cap Bolts Screws, Nuts, Washers, Lock Washers Assortment Kit - 574 Pieces!

This 574-piece kit includes everything you need for heavy-duty projects. It has Grade 8 hex cap bolts, nuts, and washers. All pieces are high-quality and zinc yellow coated.

The kit features 1/4″, 5/16″, and 3/8″ screws, perfect for strong connections. It also includes flat washers and lock washers for extra security. The 24-hole steel tray keeps everything organized and easy to find.

This assortment is ideal for professionals and DIY enthusiasts. The durable tray ensures long-lasting storage and quick access.

Pros Cons
  • Massive 574-piece assortment for all your needs.
  • Top-quality Grade 8 strength for tough jobs.
  • Durable zinc yellow finish resists rust.
  • Organized in a heavy-duty steel tray.
  • Includes screws, nuts, and washers for complete projects.
  • Not for fine detail work.
  • Limited size range for bolts.
  • Tray might be too big for some.

Perfect For:

This 574-piece Grade 8 Hex Cap Bolt Screw, Nut, and Washer Assortment Kit is perfect for DIY enthusiasts and professional mechanics who need heavy-duty fasteners for their projects. It’s ideal for anyone tackling tough jobs where strength and reliability are crucial.

Ready to Purchase?

2. Fgruh 800PCS SAE Bolts and Nuts Assortment Kit,1/4-20, 5/16-18, 3/8-16, 1/2-13 Grade 8 Heavy Duty Hex Bolts Nuts and Washers Assorted kit,Yellow Zinc Plated

Fgruh 800PCS SAE Bolts and Nuts Assortment Kit,1/4-20, 5/16-18, 3/8-16, 1/2-13 Grade 8 Heavy Duty Hex Bolts Nuts and Washers Assorted kit,Yellow Zinc Plated

Conquer any project with the Fgruh 800-Piece SAE Bolts and Nuts Assortment Kit! This heavy-duty kit is packed with Grade 8 bolts, nuts, and washers, all in a convenient yellow zinc-plated finish.
It’s perfect for home repairs, boats, and machinery. Find the exact size you need fast. Keep your workspace organized and your projects strong.

Pros Cons
  • 800-piece kit covers 19 common SAE sizes for all projects.
  • Grade 8 alloy steel ensures durability and corrosion resistance.
  • Organized storage case keeps bolts, nuts, and washers handy.
  • Versatile use for home, machinery, and DIY tasks.
  • No metric sizes, limiting use for non-SAE projects.
  • Large quantity, may be excessive for small tasks.
  • Heavy box, not ideal for portable use.

Perfect For:

This 800-piece SAE bolts and nuts kit is perfect for anyone who needs reliable, heavy-duty hardware for home repairs, DIY projects, or professional work. Whether you’re fixing appliances, machinery, or vehicles, this organized kit has everything you need, saving you time and money.

Ready to Purchase?

3. M&M Fasteners 2,510 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt & Washer Assortment Kit (Fasteners Only)

M&M Fasteners 2,510 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt & Washer Assortment Kit (Fasteners Only)

M&M Fasteners offers a 2,510-piece kit with grade 8 coarse thread hex bolts, nuts, and washers. The set includes five common sizes: 1/4, 5/16, 3/8, 7/16, and 1/2. Each part is individually bagged and labeled for easy use.

This kit is perfect for professionals and DIYers alike. With over 25 years of industry experience, M&M Fasteners ensures top-notch quality and service.

Pros Cons
  • 2,510 pieces for all your fastening needs.
  • Grade 8 quality ensures strong, durable performance.
  • Individually bagged and labeled for easy organization.
  • Over 25 years of trusted industry expertise.
  • No tools included, just fasteners.
  • Large quantity may be too much for small projects.
  • Storage space needed for 2,510 pieces.

Perfect For:

This M&M Fasteners kit is perfect for anyone who needs a reliable supply of high-quality bolts, nuts, and washers. Whether you’re a DIY enthusiast, a professional mechanic, or a small business owner, this assortment has you covered with 2,510 pieces in common sizes.

Ready to Purchase?

4. M&M Fasteners 1,250 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt Hex Head Cap Screw & Washer Assortment with Metal Drawer

M&M Fasteners 1,250 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt Hex Head Cap Screw & Washer Assortment with Metal Drawer

Conquer any project with the M&M Fasteners 1,250 Piece Assortment! This complete set gives you all the nuts, bolts, and washers you need. Get ready for anything with Grade 8 coarse thread fasteners.

You’ll find popular sizes like 1/4, 5/16, 3/8, and 1/2 inch. Everything is neatly organized in a durable metal drawer. This 24-compartment organizer keeps your workspace tidy and efficient.

With over 25 years of experience, M&M Fasteners offers top-notch customer service. Get the job done right with this essential hardware collection.

Pros Cons
  • Massive 1,250-piece assortment.
  • All-in-one convenient metal drawer.
  • Versatile sizes for any job.
  • Durable Grade 8 fasteners.
  • Trusted 25+ years of quality.
  • Zinc yellow may not be ideal for all aesthetics.
  • Metal drawer might be heavy for some.
  • 1,250 pieces could be too many for small projects.

Perfect For:

This 1,250-piece Grade 8 fastener assortment is perfect for DIYers and professionals who need a wide variety of bolts, nuts, and washers for their projects, all neatly organized in a durable metal drawer.

Ready to Purchase?

5. M&M Fasteners 5,170 Piece Grade 8 Coarse Thread Hex Bolt, Hex Nut, Lock Washer, Flat Washer & Nylon Insert Nut Assortment Kit with 2 Metal Bolt Bins

M&M Fasteners 5,170 Piece Grade 8 Coarse Thread Hex Bolt, Hex Nut, Lock Washer, Flat Washer & Nylon Insert Nut Assortment Kit with 2 Metal Bolt Bins

The M&M Fasteners 5,170 Piece Kit is a complete solution for all your fastening needs. It includes grade 8 coarse thread hex bolts, hex nuts, lock washers, flat washers, and nylon insert nuts. This kit is perfect for professionals and DIY enthusiasts.

Seven sizes are included: 1/4, 5/16, 3/8, 7/16, 1/2, 5/8, and 3/4. The kit has 5,170 pieces in total. It comes with two metal bolt bins for easy storage.

The bolt bins have 40 compartments each and include labels. They measure 33-3/4″x6-1/2″x22-1/4. This kit is a great value and will last a long time.

Pros Cons
  • Massive 5,170-piece set.
  • Grade 8 for superior strength.
  • All-in-one convenience kit.
  • Organized with 2 metal bins.
  • Covers many common sizes.
  • Heavy and bulky storage bins take up lots of space.
  • No small sizes included for smaller projects.
  • Overwhelming for beginners with so many pieces.

Perfect For:

This massive 5,170-piece assortment kit is perfect for serious DIYers, mechanics, and construction professionals who need a huge variety of high-quality Grade 8 fasteners on hand for any project. With all the essential sizes and hardware you’ll ever need, plus two handy organizer bins, you’ll be ready to tackle any job with confidence.

Ready to Purchase?

6. M&M Fasteners 1,250 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt & Washer Assortment Kit

M&M Fasteners 1,250 Piece Grade 8 Coarse Thread Nut Bolt Hex Bolt & Washer Assortment Kit

Tackle any project with the M&M Fasteners 1,250 Piece Grade 8 Coarse Thread Nut Bolt & Washer Assortment Kit. This comprehensive set has everything you need for heavy-duty applications.

You’ll find 1,250 pieces of high-quality, grade 8 coarse thread fasteners, including hex bolts, nuts, lock washers, and flat washers. The kit covers popular sizes: 1/4, 5/16, 3/8, and 1/2 inch. Each piece is clearly labeled and bagged, making organization a breeze. Plus, you’re backed by over 25 years of industry experience and top-notch customer service.

Get unbeatable strength. Find exactly what you need. Build with confidence.

Pros Cons
  • Massive 1,250-piece assortment for any project.
  • Top-grade Grade 8 strength for tough jobs.
  • Easy-to-find sizes: 1/4, 5/16, 3/8, 1/2 inch.
  • Organized and labeled for quick access.
  • Trusted company with 25+ years experience.
  • No metric sizes, limiting use for international projects.
  • Bulk packaging may take up extra storage space.
  • Zinc coating could wear off over time.

Perfect For:

This M&M Fasteners 1,250 Piece Assortment Kit is perfect for DIY enthusiasts and professional contractors who need a wide variety of strong, reliable fasteners for any project. With all the essential sizes and clear labeling, you’ll save time and effort finding exactly what you need.

Ready to Purchase?

7. 2,510 Piece Grade 8 Coarse Thread Nut Bolt Washer Assortment Kit, Hex Bolts, Hex Nuts, Lock and Flat Washers with Metal Bolt Bin Kit

2,510 Piece Grade 8 Coarse Thread Nut Bolt Washer Assortment Kit, Hex Bolts, Hex Nuts, Lock and Flat Washers with Metal Bolt Bin Kit

This 2,510-piece kit includes grade 8 coarse thread hex bolts, hex nuts, lock washers, and flat washers. It comes with a 36-compartment bolt bin to keep everything organized. Bin labels are included for easy sorting.

The kit covers five common sizes: 1/4, 5/16, 3/8, 7/16, and 1/2. The bolt bin measures 23 ¾ x 4 ¾ x 23 ¾ inches, making storage simple.

Pros Cons
  • 2,510 pieces for all your fastening needs in one kit.
  • Organized storage with a 36-compartment bolt bin and labels.
  • Grade 8 strength ensures durability and reliability for heavy-duty use.
  • Multiple sizes (1/4 to 1/2) for versatile project compatibility.
  • No metric sizes, only imperial measurements included.
  • Large bin size may take up too much space.
  • No tools or extra accessories provided.

Perfect For:

This 2,510-piece kit is perfect for anyone who needs a reliable supply of high-quality fasteners. Whether you’re a DIY enthusiast, professional mechanic, or handy homeowner, this assortment of grade 8 coarse thread bolts, nuts, and washers has you covered.

Ready to Purchase?

8. Hard to Find Fastener Yellow Zinc Grade 8 Lock Nuts, Durable Fasteners for Home Improvement, DIY, Construction, 5/8-11 Coarse, Pack of 10

Hard to Find Fastener Yellow Zinc Grade 8 Lock Nuts, Durable Fasteners for Home Improvement, DIY, Construction, 5/8-11 Coarse, Pack of 10

Secure your projects with Hard to Find Fastener Yellow Zinc Grade 8 Lock Nuts. These nuts offer premium strength and a secure locking design. They are built to last.
These lock nuts feature a special threading for higher shear resistance. This ensures your connections stay tight and reliable.
With a yellow zinc finish, they resist rust and wear. This makes them perfect for many projects, both inside and out.

Pros Cons
  • Grade 8 steel ensures maximum strength and durability.
  • Locking design prevents loosening from vibration or heavy loads.
  • Zinc coating resists rust for long-lasting use.
  • Versatile for automotive, industrial, and DIY projects.
  • Not for extreme outdoor use, may rust in harsh weather.
  • Limited pack size, only 10 nuts per pack.
  • No color options, only yellow zinc finish available.

Perfect For:

These Hard to Find Fastener Yellow Zinc Grade 8 Lock Nuts are perfect for DIY enthusiasts, home improvement projects, and construction professionals who demand unwavering strength and reliable security in their builds. They ensure your projects stay tight and secure, no matter the challenge.

Ready to Purchase?

9. Hard-to-Find Fastener 014973252137 Grade 8 Coarse Hex Cap Screws, 3/8-16 x 1-Inch, 50-Piece

Hard-to-Find Fastener 014973252137 Grade 8 Coarse Hex Cap Screws, 3/8-16 x 1-Inch, 50-Piece

Tackle any project with confidence using these tough Grade 8 Coarse Hex Cap Screws. They are built for strength and durability, making them perfect for demanding jobs.

These screws are 3/8 inch in diameter and 1 inch in length. They have a yellow zinc finish for protection. The hex head fits a 9/16 wrench.

When you need reliable fasteners, these screws deliver. They are made from steel for long-lasting performance. Get the job done right with these dependable screws.

Pros Cons
  • Strong steel for tough jobs.
  • Bright yellow zinc finish resists rust.
  • Perfectly sized for many projects.
  • Easy to grip hex head.
  • Limited to 1-inch length.
  • Yellow zinc finish may fade over time.
  • Steel can rust if not protected.

Perfect For:

This product is perfect for DIY enthusiasts and professional builders who need strong, reliable fasteners for their projects.

Ready to Purchase?

10. Titan 5,445 pcs Grade 8 Coarse Hardware Assortment Kit with Hex Cap Screws, Hex Nuts, Nylon Locknuts & Washers- Fasteners Only

Titan 5,445 pcs Grade 8 Coarse Hardware Assortment Kit with Hex Cap Screws, Hex Nuts, Nylon Locknuts & Washers- Fasteners Only

The Titan 5,445-piece kit is a complete hardware assortment. It includes hex cap screws, hex nuts, nylon locknuts, and washers. Perfect for all your fastening needs.

This kit offers more sizes and pieces than most. Sizes range from 1/4″ to 3/4″, covering all common needs. Each piece is clearly labeled for easy organization.

We stand behind our 25 years in business. If you’re not satisfied, we offer a 100% money-back guarantee. No questions asked!

Pros Cons
  • 5,445 pieces for all your hardware needs.
  • 7 sizes included for versatile use.
  • Easy organization with labeled compartments.
  • 100% money-back guarantee for peace of mind.
  • No tools included, just fasteners.
  • Large quantity may be too much for small projects.
  • Storage space needed for 5,445 pieces.

Perfect For:

This Titan 5,445 pcs Grade 8 Coarse Hardware Assortment Kit is perfect for anyone who needs a huge selection of fasteners for any project, big or small. With tons of sizes and easy organization, you’ll always have the right bolt, nut, or washer at your fingertips.

Ready to Purchase?

Buying Guide

Grade 8 fasteners are the best choice for heavy-duty projects. They offer unmatched strength and durability, making them essential for any task.

When buying Grade 8 fasteners, consider these key factors:
Size and Variety: Choose kits with common sizes like 1/4″, 5/16″, and 3/8″. Look for variety to fit all your needs.
Material and Coating: Opt for yellow zinc-plated fasteners for rust resistance and longevity.
Organization: Pick kits with storage bins or trays to keep fasteners sorted and easy to find.
Quantity: Select a kit with enough pieces for multiple projects. Larger kits save time and money.
Brand Reputation: Trust brands with years of experience and positive reviews for reliable quality.
Inclusions: Look for kits with bolts, nuts, washers, and lock washers for complete solutions.
Ease of Use: Choose kits with labeled parts and clear instructions for hassle-free assembly.

With these tips, you’ll find the perfect Grade 8 fasteners to elevate your projects and work smarter!