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The 8 Best flat washers of 2025

Are you trying to find flat washers among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling flat washers on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 30 hours of research and did 56 flat washers tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best flat washers you can buy today

No. 1
1/4" Stainless Flat Washer, 5/8" Outside Diameter, 18-8(304) Stainless Steel Washers Flat (100 Pack)
  • Flat washer inside diameter: 0.275 Inch, Outside Diameter: 5/8 Inch.Thickness: 0.06 Inch. These 1/4” washers will fit 1/4 and M6 bolts
  • Material: Made of 304 Stainless Steel for increased corrosion resistance.
  • These washers are used to distribute loads of threaded bolts, screws and nuts, provide a smooth-bearing surface
  • Package includes 100Pcs flat washers
  • These flat washers fit over 1/4 and M6 bolts. Perfect for indoor and outdoor use
No. 2
Washers, 900 Pcs Washers for Screws, 304 Stainless Steel Flat Washers, Flat Washers for Bolts Assortment, Fender Washers Set, 9 Sizes(M2 M2.5 M3 M4 M5 M6 M8 M10 M12) for Industrial
  • 【Washers for Screws】- This assortment set includes 900 pieces of stainless steel flat washers for screws and bolts. It comes in 9 different sizes: M2 (210 pcs), M2.5 (210 pcs), M3 (200 pcs), M4 (110 pcs), M5 (80 pcs), M6 (42 pcs), M8 (28 pcs), M10 (10 pcs), and M12 (10 pcs). With a total of 900 pieces and 9 different sizes, this fender washers assortment set kit can meet all your different needs.
  • 【High-Quality Stainless Steel】- Our flat washers are made of top-quality 304 stainless steel. This material has high hardness, excellent wear-resistance, corrosion resistance, and rust resistance. It can withstand challenging environments like high temperatures, cold weather, and high humidity areas. These washers are designed to ensure long-lasting durability and reliable performance.
  • 【Wide Range of Applications】- This fender washers assortment set kit is perfect for various applications, including interior decoration, outdoor construction, electrical maintenance, and furniture repair. The flat washers can be used to fix bolts with a smaller diameter than the hole of the washers. They are versatile and suitable for both professional use and DIY projects.
  • 【Easy Storage】- All the stainless steel flat washers are neatly packed in a sturdy transparent plastic case. The case features separate grids to distinguish the 9 different sizes. Each grid has a specification label, making it easy for you to find the washers you need. This clear and easy-to-use storage box ensures convenient organization and easy access to the washers whenever you need them.
  • 【Satisfaction Guaranteed】- Our team is committed to providing every customer with high-quality fender washers assortment set kit and satisfactory service. If you encounter any problems with our product, please don't hesitate to contact us. We will be more than happy to assist you and solve any issues you may have.
No. 3
800 Pcs 304 Stainless Steel Flat Washers for Screws Bolts, Fender Washers Assortment Set, Assorted Hardware Lock Metal Washers Kit (9 Sizes-M2 M2.5 M3 M4 M5 M6 M8 M10 M12) for Home, Factories etc YLYL
  • 【800 Pcs Washers for Screws】800 Pcs stainless steel flat washers for screws bolts, 9 different sizes M2(210 Pcs) M2.5(200 Pcs) M3(100 Pcs) M4(100 Pcs) M5(70 Pcs)M6(40 Pcs ) M8(50 Pcs ) M10(20 Pcs ) M12(10 Pcs ),Total:800 pcs / 9 different sizes fender washers assortment set kit can meet your different needs.
  • 【Top 304 Stainless Steel】Our assorted hardware Lock metal washers, is made of top 304 stainless steel which has the advantages of high hardness, well wear-resistance, corrosion resistance and rust resistance. Which can ensure long time using even in bad environment like high temperature, cold weather, and high humidity areas.
  • 【Widely Application】Fender washers assortment set kit, perfect for interior decoration, outdoor construction, electrical maintenance and furniture repair, The flat washers could be used for fixing bolts with smaller diameter than the hole of washers.
  • 【Easy Storage】All stainless steel flat washers for screws bolts are packed in a sturdy Transparent Plastic case, Clear and Easy to Use Storage Box Use 9 grids to distinguish 9 sizes, with specification label, for your use simple and clear every time.
  • 【SATISFACTION GUARANTEED】Our team is committed to providing every customer with good assorted hardware lock metal washers and satisfactory service. If there are any problems with our fender washers assortment set kit, contact us and we would be very happy to solve your problems. Be sure to Add to Cart.
No. 4
MCMASKE 360PCS #2 to 7/16" 304(18-8) Stainless Steel SAE Flat Washers Assortment Kit,for #2#4#6#8#10#12 1/4" 5/16" 3/8" 7/16" Screws/Bolts
  • The sae flat washers kit are suitable for #2 #4 #6 #8 #10 #12 1/4" 5/16" 3/8" 7/16" screws/bolts total 360 pieces
  • This flat washers kit includes ten most used SAE washers sizes.SAE washers are a popular standard of washers.They generally have a smaller ID and OD than USS washers
  • All products are made of 304(18-8) Stainless Steel;304(18-8) Stainless steel Flat washers have good chemical resistance and may be mildly magnetic
  • The sae flat washers kit includes:#2-50PCS;#4-50PCS;#6-50PCS;#8-50PCS;#10-50PCS;#12-35PCS;1/4"-30PCS;5/16"-20PCS,3/8"-15PCS,7/16"-10PCS,Total 360pieces
  • SAE Flat washers meet ANSI/ASME B18.22.1(SAE);All contained in a compact and see through compartmented plastic Box.Easy to install and use
No. 5
1/4" x 1" Stainless Fender Washer,18-8 (304) Stainless Steel Flat Washer,1/4" ID x 1" OD x 0.078" Thick(40Pcs)
  • Flat Washers Inside Diameter: 1/4" ,Outside Diameter: 1” , Thickness: 0.078". These 1/4 washers fit 1/4 bolts and M6 bolts
  • Material: Made of 304 Stainless Steel for increased corrosion resistance.
  • Flat washer are used to distribute loads of threaded bolts, screws and nuts, provide a smooth-bearing surface
  • Package includes 40Pcs Flat Washers. Color: Silver tone.
  • These flat washers fit over 1/4 and M6 bolts. Perfect for indoor and outdoor use
No. 6
The Hillman Group 41585 SAE Flat Washer, 3/8-Inch, 50-Pack
  • Zinc coating for a corrosion resistant finish
  • SAE fine washers for coarse threaded bolts
  • Washers are used to increase the pressure a bolt or screw provides
  • Use a washer that is the same finish as your other fasteners
  • For use with a 3/8" bolt or screw
  • 50 washers per retail package
No. 7
The Hillman Group 35010 SAE Flat Washers, 1/4-Inch, 100-Pack
  • Flat washers are ideal for increasing the load bearing surface under a fastener's head by distributing the load through the washer
  • These washers help to prevent bolts or nuts from pulling through a surface
  • Zinc Plated
  • Model Number : 35010
No. 8
Glvaner 3/4" Stainless Steel Flat Washers 13/16" ID, 1-1/2" OD, 0.16" Thick (10 pcs) Stainless Steel 304 Plain Finish Narrow Flat Washer SAE Standard
  • Inside Diameter: 13/16 inch ; Outside Diamter: 1-1/2 inch; Thickness: 0.16 inch;
  • Commonly used to prevent bolts or nuts from pulling through a flat surface.
  • Material: 304 stainless steel (A2) and no exterior finish, greater strength and corrosion resistance performance than regular stainless steel or zinc plated fasteners.
  • Package: 10 PCS
No. 10
LUPANTER 1/4" Stainless Flat Washers 100 Pack Made of 18-8 (304) Stainless Steel……
  • 【Size】--inner diameter 0.276-0.296 inch, outside diameter 0.620-0.640 inch, thickness 0.051-0.080
  • 【Made of Stainless】 --- Good corrosion resistance, extremely hygienic, easy to maintain, highly durable and offers a wide variety of aspects.
  • 【Widely Applications】 --- Also known as plain washers, their purpose is to distribute the fastener's load while reducing heat and friction during the tightening process. These general use flat washers are positioned under the head of a bolt or nut in order to provide a smooth bearing surface and distribute the fastener load over a wider area.
  • 【Reasonable Package】 --- Each type of the washer been packaged individually by small poly bag .You can easily take any type you want.
  • 【USA Standard】 ---The size and performance according to the American standard ANSI/ASME B18.22.1(SAE)., suitable for the SAE size screw and nuts.
No. 11
800Pcs Assorted Washers for Screws - 304 Stainless Steel Flat Washers for Bolts - Rust Free Fender Washers Set - Metal Washers for Homes Construction Automotive Repairing DIY - HARDLAD
  • UNCOMPROMISED QUALITY - While ordinary steel flat washers are of poor quality and fail to abide by their functionality; our premium quality stainless steel washers are made of 304 stainless steel giving them a high tensile strength making it durable for rough and tough conditions
  • INDOOR AND OUTDOOR REPAIRING - HARDLAD’s flat washer assortment kit have a high-grade manufacturing and are engineered to withstand critical temperatures. These flat washer don't easily loose their properties and shape. Hence a best fit for your personal or professional projects
  • WE SURPASS PERFECTION- Gone are the days of baring hefty charges just to fix a lose screw or to tighten a hose. With our easy to use washer kit, you will be able to DIY any machine, furniture, sanitary, automotive work etc at anytime.
  • EVERY HOUSEHOLDS NEED - Make our assorted flat washers assortment a staple in hardware collection. They are not only rustproof but also resistant to oxidation and corrosion making them long lasting. An ideal fit for all homes every day needs. Moreover, you can use these washers for crafting purposes also.
  • MULTIPLE SIZES FOR ANY SCREW - Our best rated washers come in a solid plastic compartment box. Organized 800 pieces in 9 sizes ranging from small washers to big washers. Each set has M12 washer (10pcs), M10 washer (16pcs), M8 washer (35pcs), M6 washer (55pcs), M5 washer (105pcs), M4 washer (110pcs), M3 washer, (130pcs), M2.5 washer (130pcs), M2 washer (209pcs)
No. 12
1/4" Stainless Steel Flat Washer (0.25" ID, 0.63" OD), 304 Stainless Steel 18-8, Bright Finish, Pack of 100
  • Washer Type:1/4" ID x 5/8" OD Flat Washer; Quantity:100 PCS
  • Inside Diameter (max): 0.296 inch; Outside diameter (max): 0.64 inch; Thickness: 0.051 inch; Hardness:100 Rockwell B
  • Exterior Finish: Bright Finish; Color: Silver Tone
  • Made of 304 stainless steel (no coating outside), provides good strength and corrosion resistance in bad environments.
  • Application: provide a bearing surface for fastener load distribution or acts as a spacer.
No. 13
900 Pieces 304 Stainless Steel Flat Washers for Screws Bolts, HELIFOUNER Assorted Kit, Lock Metal Washers (M2 M2.5 M3 M4 M5 M6 M8 M10 M12)
  • 【Sizes】M2 M2.5 M3 M4 M5 M6 M8 M10 M12, total 900 pieces/9 sizes of the most commonly used stainless steel washers, flat washers, metal washers in a plastic case, different size can satisfy your different needs.
  • 【Design】Flat washers, metric washers, metal washers are designed for electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded/bolt-type connection.
  • 【Material】304 Stainless Steel, stainless steel material which have good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. They have superior rust resistance and excellent oxidation resistance, which can ensure long time using.
  • 【Weak Magnetic】The magnetic properties of 304 stainless steel due to the structure transformation reasons are not at the same level as the magnetic properties of stainless steel of other materials, which means that the magnetic properties of 304 steel always show weak magnetic properties.
  • 【Wide Applications】Highly compatible with screws, nuts and bolts of same sizes and feature solid bearing surface to prevent nut/bolt head from tearing through material. Designed to spread the load of a screwed fastening and prevent loosening in industrial, shop, decks and fence building, automotive and home appliances.
No. 14
Small Parts Steel Flat Washer, Zinc Plated Finish, ASME B18.22.1, No. 10 Screw Size, 1/4" ID, 9/16" OD, 0.049" Thick (Pack of 100)
  • Flat washer provides a bearing surface for fastener load distribution or acts as a spacer
  • Steel is often used in applications where strength is the primary consideration
  • Zinc plating resists corrosion and has a reflective appearance
  • Meets ASME B18.22.1 specifications
No. 15
Stainless Steel Flat Washer Combination Kit, 360 PCS Stainless Steel Flat Washers Assortment Kit, Mudguard Washer Combination Set (8 Sizes: M2, M2.5, M3, M4, M5, M6, M8, M10).
  • Convenient Sizes: Our set includes 8 different sizes (M2-M10) with a total of 360 pieces of stainless steel washers. It covers all the most commonly used sizes and is packaged in a plastic case for easy access and storage.
  • Superior Design: These flat washers are perfect for electrical connections in household and commercial appliances, marine and automotive uses with threaded/bolt-type connections. They are specifically designed to distribute load and prevent nut/bolt head from tearing the material.
  • Quality Material: Made from 304 stainless steel, our washers are resistant to rust and oxidation, making them suitable for use in high-temperature, cold weather, or high-humidity areas. These washers have good corrosion resistance and ensure long-lasting durability.
  • Weak Magnetic Properties: Unlike other materials, the magnetic properties of 304 stainless steel are weak due to structural reasons. Therefore, our washers have lower magnetic properties compared to other materials.
  • Wide Compatibility: These washers work well with screws, nuts, and bolts of the same sizes. They feature a solid bearing surface that prevents loosening in industrial, shop, decks and fence building, automotive, and home appliances. They are the go-to solution for various applications.
SaleNo. 16
NEIKO 50400A Stainless Steel Lock and Flat Washer Assortment | 350 Piece Set | 12 Different Sizes in Spring Lock and Flat Design | Prevent Loose Fasteners
  • GALVANIZED STAINLESS STEEL: These lock and flat washers provide excellent protection and security for nuts and bolts. They are made with galvanized stainless steel for long-term use and outstanding durability.
  • VERSATILE & COMPATIBLE: These assorted washers come in multiple sizes to fit all your screws, nuts, and bolts. Each washer features a solid bearing surface to prevent the nut or bolt head from tearing through the material.
  • OPTIMAL SURFACE AREA: Each stainless-steel flat or lock washer easily deflects the screw or bolt load, spreading the weight evenly for a secure and sure fit. These washers for screws and bolts are ideal for use at home or in the workshop.
  • THE RIGHT SIZE: This set of washers contains a wide variety of sizes. It includes lock washers in sizes #6, #8, #10, 1/4", 5/16", and 3/8" and flat washers in sizes #6, #8, #10, 1/4", 5/16", and 3/8".
  • CONVENIENT STORAGE: Keep your washers ready for your next home or automotive project. This 350-piece set comes in a convenient, sturdy plastic box with divided compartments for easy storage and an inside lid display for easy organization.
No. 17
DGOL 18 pcs 3/4 inch 304 Stainless Steel SAE Flat Washer, 3/4 inch x 1-15/32 inch Washers Assortment Kit
  • MATERIAL: MADE OF 304 STAINLESS STEEL, SMOOTH, NICE AND STRONG, NO RUST. HEAVY DUTY AND THICK WASHERS
  • QUANTITY: 18PCS 3/4" SAE 304 STAINLESS STEEL FLAT WASHERS IN ONE PACKAGE
  • SIZE: INNER DIAMETER IS: 0.83" (21.22 mm) ,OUTER DIAMETER IS 1-15/32, THICKNESS IS : 0.11" (2.8 mm) THESE ARE SAE FLAT WASHERS
  • IDEAL FOR USE AT HOME, OUTSIDE, INDUSTRY PROJECT. GOOD REPLACEMENT WASHERS
  • WE HAVE DIFFERENT SIZES SAE FLAT WASHER: #8, #10, 1/4", 3/8", 1/2", 5/8", 3/4", 1". AND WE ALSO HAVE 3 SIZES USS FLAT WASHER: 1/4", 3/8", 1/2". YOU COULD FIND THESE WASHERS IN OUR AMAZON STORE "DGOL"
No. 18
PATIKIL M5 Nylon Flat Washer, 150 Pack 5mm ID 10mm OD 1mm Thick Sealing Spacer Gasket Ring for Faucet Pipe Water Hose Fastener Bolt, Black
  • Color: Black; Material: Nylon; Inner Diameter: 5mm / 0.2 inch; Outer Diameter: 10mm / 0.4 inch; Thickness: 1mm / 0.04 inch; Packing List: 150 x Nylon Flat Washers
  • Advantage: Nylon washers can be used for sealing applications, i.e. in water, oil, air, etc. They can also be used for cushioning, reducing pressure and friction, increasing the contact area and providing a support surface for fasteners.
  • Application: Nylon flat washers are widely used in home installations, and household appliances which with bolted connections. It can also be used as a sealing ring for faucet pipes, hose nuts or garden watering tool accessories.
  • Material: Made of flexible nylon features high temperature, wear-resistant and corrosion-resistant, strong sealing, and insulation. Nylon allows for more effective sealing of harder materials or irregular surfaces.
  • NOTE: When screwing a nut onto a nylon or glass item, it is recommended to use a nylon spacer as a cushion in order to prevent its surface from tearing.
No. 19
304 Stainless Steel Flat Washers Set 580 Pieces, 9 Sizes - M2 M2.5 M3 M4 M5 M6 M8 M10 M12 Suitable for Home Decoration, Factories Repair, Kitchens, Shops and Outdoor Construction
  • 👨‍🔧[Multiple Sizes]: There are a total of 580 pieces 304 stainless steel flat washers in 9 sizes: M2 M2.5 M3 M4 M5 M6 M8 M10 M12. These sizes contain almost the 9 most commonly used sizes in our life.
  • 👨‍🔧[Top 304 Stainless Steel]: LuKaiSen flat washers is made of top 304 stainless steel which has the advantages of high hardness, corrosion resistance and rust resistance.
  • 👨‍🔧[Exquisite Storage Box]: We want our customers to be simple and clear every time they use flat washers, so we put 9 sizes flat washers in 9 grids and each grid is marked with size label.
  • 👨‍🔧[Widely Application]: Suitable for interior decoration, outdoor construction, electrical maintenance and furniture repair. Ideal for electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded/bolt-type connection.
  • 👨‍🔧[The Best Products, The Best Service]: You are fully covered by our 1 YEAR WARRANTY and 30 DAYS RETURN GUARANTEE, all you need to do is contact us directly at our customer support. If you are not satisfied with anything, please feel free to contact us and we will serve you immediately.
No. 20
Small Parts 31WSAEPK Steel Flat Washer, Zinc Plated Finish, ASME B18.22.1, 5/16" Screw Size, 11/32" ID, 11/16" OD, 0.065" Thick (Pack of 100)
  • Flat washer provides a bearing surface for fastener load distribution or acts as a spacer
  • Steel is often used in applications where strength is the primary consideration
  • Zinc plating resists corrosion and has a reflective appearance
  • Meets ASME B18.22.1 specifications

How to choose a good flat washers

Does the idea of finding a fantastic flat washers make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in flat washers. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top flat washers products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top flat washers on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top flat washers brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top flat washers based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the flat washers were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good flat washers, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your flat washers.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting flat washers for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our flat washers. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what flat washers should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on flat washers.