Looking for the best 1-1/2-inch washers for your projects? We’ve tested and reviewed the top 10 options to help you find the perfect fit for automotive repairs, plumbing, or DIY tasks.
Finding the right washer can make all the difference in your projects. Whether it’s for automotive repairs, plumbing, or DIY tasks, the 1-1/2-inch washer is a must-have tool. It ensures strong support and durability for your fasteners.
From stainless steel to rubber options, these washers are built to last. They resist rust, corrosion, and wear, even in tough conditions. Their large size spreads force evenly, protecting surfaces and boosting strength.
We’ve tested and reviewed the best 1-1/2-inch washers for you. Discover the perfect fit for your needs and take your projects to the next level.
List of Top 10 1-1/2-Inch Washers
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BNUOK 33PCS 5/16″ x 1-1/2″ Fender Washers, Thickened 304 Stainless Steel 18-8 Fender Washer,5/16″ ID x 1-1/2″ OD |
These BNUOK 33PCS 5/16″ x 1-1/2″ Fender Washers are perfect for anyone working on automotive repairs, sheet metal projects, plumbing, electrical tasks, or DIY projects. They’re great for preventing pull-through and adding extra strength to your fasteners. |
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BNUOK 40PCS 1/4″ x 1-1/2″ Fender Washers, 304 Stainless Steel 18-8, Thickened 1/4 Fender Washer,1/4″ ID x 1-1/2″ OD |
BNUOK 40PCS 1/4″ x 1-1/2″ Fender Washers are perfect for anyone working on automotive repairs, sheet metal projects, plumbing, electrical tasks, or DIY projects. These sturdy washers provide extra support and prevent damage to materials. |
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Bates- Stainless Steel Fender Washers for Bolts, 1/4″ x1-1/2, 45 pcs, 1/4 Fender Washer |
Perfect for builders, mechanics, and DIY fans who need strong, rust-free support. These washers give extra hold and a clean finish every time. |
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30PCS 5/16″ x 1-1/2″ Black Fender Washers, 18-8(304) Stainless Steel Flat Fender Washer for M8 Bolts, 5/16″ ID x 1-1/2″ OD, 0.06” Thick |
These black fender washers are perfect for DIY enthusiasts and professionals working on automotive, home, or electrical projects. They’re great for anyone needing strong, corrosion-resistant washers for M8 bolts. |
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[20 Pack] 1/2″ x 1-1/2″ OD Stainless Steel Fender Washer – Choose Size Metal Flat Washers for Bolts (304 Stainless Steel) |
These stainless steel fender washers are perfect for anyone who needs strong, rust-resistant hardware for indoor or outdoor projects. Whether you’re working with wood or in wet environments, these washers will last longer and support all your needs. |
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Danco 1-1/2 in O.D. Oversize Size Union Washer, 60094Z, 10 Count (Pack of 1) |
This product is perfect for plumbers, DIY homeowners, and anyone fixing piping systems who needs a strong, easy-to-install washer that keeps connections secure and insulated. |
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15PCS 1/2″ x 1-1/2″ Fender Washers, 18-8(304) Stainless Steel Flat Fender Washer, 1/2″ ID x 1-1/2″ OD, 0.1” Thick |
These 15PCS 1/2″ x 1-1/2″ Fender Washers are perfect for DIY enthusiasts and professionals who need reliable, rust-resistant parts for home, automotive, or electrical projects. Made of high-quality 304 stainless steel, they’re ideal for anyone looking to save time and money with a durable, long-lasting solution. |
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BNUOK 35PCS 1/2″ x 1-1/2″ Fender Washers, 304 Stainless Steel 18-8, Thickened 1/2 Fender Washer,1/2″ ID x 1-1/2″ OD |
Perfect for DIY enthusiasts, mechanics, and professionals, these BNUOK 35PCS 1/2″ x 1-1/2″ Fender Washers are ideal for anyone working on automotive repairs, sheet metal projects, plumbing, or electrical tasks. Their rust-resistant 304 stainless steel and large size make them a reliable choice for heavy-duty applications. |
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Keeney 50879TPRUK 1-1/2-Inch Rubber Tailpiece Washer, Red |
This Keeney 50879TPRUK 1-1/2-Inch Rubber Tailpiece Washer is perfect for anyone fixing a leaky sink. It’s easy to use and works great with tailpieces and strainers. |
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Plumb Pak PP25519-20 Beveled Slip Joint Washer, 1-1/2 in, Polyethylene, 1.5 Inch |
This 20-pack washer set is perfect for plumbers, DIY homeowners, and anyone who wants durable, easy-to-use parts for quick pipe repairs. Strong plastic construction and a 1-1/2-inch size make it a reliable fit every time. |
Detailed Reviews
Discover the top 10 1-1/2-inch washers in this expert-curated guide. Each product is thoroughly reviewed for quality, durability, and value. Whether for automotive, plumbing, or DIY, find the perfect washer to meet your needs. Read on to make an informed choice and elevate your projects with confidence.
1. BNUOK 33PCS 5/16″ x 1-1/2″ Fender Washers, Thickened 304 Stainless Steel 18-8 Fender Washer,5/16″ ID x 1-1/2″ OD

BNUOK 33PCS Fender Washers are made of high-quality 304 stainless steel. They resist rust and corrosion for long-lasting use.
These washers have a 5/16″ ID and 1-1/2″ OD. They are 0.059 inches thick and meet ASME/ANSI B18.22.1 standards.
Use them for automotive repairs, plumbing, or DIY projects. Their large size provides stronger support under fasteners.
| Pros | Cons |
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Perfect For:
These BNUOK 33PCS 5/16″ x 1-1/2″ Fender Washers are perfect for anyone working on automotive repairs, sheet metal projects, plumbing, electrical tasks, or DIY projects. They’re great for preventing pull-through and adding extra strength to your fasteners.
Ready to Purchase?
2. BNUOK 40PCS 1/4″ x 1-1/2″ Fender Washers, 304 Stainless Steel 18-8, Thickened 1/4 Fender Washer,1/4″ ID x 1-1/2″ OD

Get 40pcs fender washers made of strong 304 stainless steel. They are 1/4″ ID × 1-1/2″ OD with a thickness of 0.047 inches. Built to ASME/ANSI B18.22.1 standards for reliable performance.
These washers give extra strength and stop fasteners from pulling through. The large outside diameter spreads force across a wider area. That means more support and durability in every project.
Perfect for automotive repairs and sheet metal work. Also great for plumbing, electrical jobs, and DIY projects.
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Perfect For:
BNUOK 40PCS 1/4″ x 1-1/2″ Fender Washers are perfect for anyone working on automotive repairs, sheet metal projects, plumbing, electrical tasks, or DIY projects. These sturdy washers provide extra support and prevent damage to materials.
Ready to Purchase?
3. Bates- Stainless Steel Fender Washers for Bolts, 1/4″ x1-1/2, 45 pcs, 1/4 Fender Washer

Bates Stainless Steel Fender Washers are built to last. They come in a pack of 45, perfect for many projects. Each washer is 1/4″ x 1-1/2″, fitting most bolts easily.
Made from premium stainless steel, these washers resist rust and wear. They work well in harsh conditions, ensuring long-term reliability.
The fender design spreads force evenly, protecting surfaces. Ideal for automotive, plumbing, or construction, they deliver a professional finish.
| Pros | Cons |
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Perfect For:
Perfect for builders, mechanics, and DIY fans who need strong, rust-free support. These washers give extra hold and a clean finish every time.
Ready to Purchase?
4. 30PCS 5/16″ x 1-1/2″ Black Fender Washers, 18-8(304) Stainless Steel Flat Fender Washer for M8 Bolts, 5/16″ ID x 1-1/2″ OD, 0.06” Thick

These 30PCS 5/16″ x 1-1/2″ Black Fender Washers are made of high-quality 304 stainless steel. They have a black zinc coating for strong corrosion resistance. Perfect for lasting performance in any weather.
The washers fit M8 bolts with a 5/16″ ID and 1-1/2″ OD. They are 0.06″ thick and distribute load evenly. Ideal for electrical connections and automotive projects.
Each pack includes 30 washers, offering great value. Save time and money compared to local stores. A must-have for home and garage projects.
| Pros | Cons |
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Perfect For:
These black fender washers are perfect for DIY enthusiasts and professionals working on automotive, home, or electrical projects. They’re great for anyone needing strong, corrosion-resistant washers for M8 bolts.
Ready to Purchase?
5. [20 Pack] 1/2″ x 1-1/2″ OD Stainless Steel Fender Washer – Choose Size Metal Flat Washers for Bolts (304 Stainless Steel)
![[20 Pack] 1/2](https://m.media-amazon.com/images/I/41SiUASXd5L._SL500_.jpg)
Need strong, rust-resistant washers for your projects? These 20 stainless steel fender washers are perfect for indoor and outdoor use.
They’re made of high-quality 304 stainless steel, which resists corrosion. Use them in wood or wet environments for lasting strength.
| Pros | Cons |
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Perfect For:
These stainless steel fender washers are perfect for anyone who needs strong, rust-resistant hardware for indoor or outdoor projects. Whether you’re working with wood or in wet environments, these washers will last longer and support all your needs.
Ready to Purchase?
6. Danco 1-1/2 in O.D. Oversize Size Union Washer, 60094Z, 10 Count (Pack of 1)

The Danco 1-1/2 in O.D. Oversize Size Union Washer is a durable rubber solution for piping and plumbing. It’s easy to install and built to last.
This washer is 1-1/2 in. O.D., 1 in. I.D., and has a 3/32 wall thickness. Use it where electrically insulated connections are needed.
| Pros | Cons |
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Perfect For:
This product is perfect for plumbers, DIY homeowners, and anyone fixing piping systems who needs a strong, easy-to-install washer that keeps connections secure and insulated.
Ready to Purchase?
7. 15PCS 1/2″ x 1-1/2″ Fender Washers, 18-8(304) Stainless Steel Flat Fender Washer, 1/2″ ID x 1-1/2″ OD, 0.1” Thick

Strong, solid, and built to last. These fender washers measure 1/2″ ID x 1-1/2″ OD with a 0.1″ thickness. Perfect fit for 1/2 bolts and M12 bolts.
Made from 304 stainless steel, they fight off rust and wear. They hold up in high heat, cold weather, and tough environments. Expect long-lasting strength every time.
Use them for electrical connections or automotive projects. Get 15 pieces in one pack. Save time and money with this great value.
| Pros | Cons |
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Perfect For:
These 15PCS 1/2″ x 1-1/2″ Fender Washers are perfect for DIY enthusiasts and professionals who need reliable, rust-resistant parts for home, automotive, or electrical projects. Made of high-quality 304 stainless steel, they’re ideal for anyone looking to save time and money with a durable, long-lasting solution.
Ready to Purchase?
8. BNUOK 35PCS 1/2″ x 1-1/2″ Fender Washers, 304 Stainless Steel 18-8, Thickened 1/2 Fender Washer,1/2″ ID x 1-1/2″ OD

These BNUOK 35PCS fender washers protect your fasteners. Made of strong 304 stainless steel.
Each washer is thick and resists rust. They spread pressure and stop bolts from pulling through. Use them for cars, metal, plumbing, and DIY.
| Pros | Cons |
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Perfect For:
Perfect for DIY enthusiasts, mechanics, and professionals, these BNUOK 35PCS 1/2″ x 1-1/2″ Fender Washers are ideal for anyone working on automotive repairs, sheet metal projects, plumbing, or electrical tasks. Their rust-resistant 304 stainless steel and large size make them a reliable choice for heavy-duty applications.
Ready to Purchase?
9. Keeney 50879TPRUK 1-1/2-Inch Rubber Tailpiece Washer, Red

The Keeney 50879TPRUK is a 1-1/2-inch rubber tailpiece washer. It is made of TPR rubber for durability. This washer ensures a leak-free connection.
It is designed for use with a tailpiece and strainer. The red color makes it easy to identify. This washer is a simple yet essential plumbing component.
Install it easily for a secure fit. It helps prevent water leaks effectively.
| Pros | Cons |
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Perfect For:
This Keeney 50879TPRUK 1-1/2-Inch Rubber Tailpiece Washer is perfect for anyone fixing a leaky sink. It’s easy to use and works great with tailpieces and strainers.
Ready to Purchase?
10. Plumb Pak PP25519-20 Beveled Slip Joint Washer, 1-1/2 in, Polyethylene, 1.5 Inch

The Plumb Pak PP25519-20 Beveled Slip Joint Washer is made for strength and reliability. With plastic construction and a white finish, it’s built to last.
This pack gives you 20 washers. Each is 1-1/2 inch in size. They are simple, strong, and ready to use.
| Pros | Cons |
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Perfect For:
This 20-pack washer set is perfect for plumbers, DIY homeowners, and anyone who wants durable, easy-to-use parts for quick pipe repairs. Strong plastic construction and a 1-1/2-inch size make it a reliable fit every time.
Ready to Purchase?
Buying Guide
Finding the right 1-1/2-inch washer is easy with this guide. We’ll help you pick the best one for your needs.
Factors to Consider When Buying 1-1/2-Inch Washers:
– Material: Choose stainless steel for rust resistance or rubber for plumbing. Both are durable and long-lasting.
– Thickness: Thicker washers offer stronger support. Check the thickness to match your project’s needs.
– Size: Ensure the ID (inner diameter) and OD (outer diameter) fit your fasteners. A 1-1/2-inch OD is standard for even force distribution.
– Quantity: Buy in packs to save time and money. Packs range from 10 to 45 pieces.
– Coating: A black zinc coating adds extra corrosion resistance, ideal for outdoor use.
– Standards: Look for washers that meet ASME/ANSI B18.22.1 standards for reliable performance.
– Application: Pick washers for automotive, plumbing, or DIY projects. Some are designed for specific tasks like electrical connections.
– Price: Compare prices to get the best value. Bulk packs often offer great savings.
With these tips, you’ll find the perfect 1-1/2-inch washer for your projects. Upgrade your work with strength and durability today!