Best Metric DIY Washers of 2026

Name: 360PCS Stainless Steel Flat Washers Set
Brand: Yibaijia

Corey Phillips

Last Updated: 4 Feb 2026

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Metric DIY Washers are essential hardware components for any DIY enthusiast or professional tradesperson. These small, circular discs are used to distribute the load of a threaded fastener, such as a screw or bolt, and prevent damage to the surface being fastened. Available in a range of sizes and thicknesses, metric washers can be used in a variety of applications, including plumbing, automotive repair, and construction projects. Their simple design and ease of use make them an indispensable part of any toolkit.

At a Glance: Our Top Picks

#TOP 1

360PCS Stainless Steel Flat Washers Set

9.9

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360PCS Stainless Steel Flat Washers Set

#TOP1

9.9

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#TOP 2

1100 Pcs Flat Washer Assortment Kit, 304 Stainless Steel, 9 Metric Sizes M2-M12, Rust-Resistant Washers

9.8

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1100 Pcs Flat Washer Assortment Kit, 304 Stainless Steel, 9 Metric Sizes M2-M12, Rust-Resistant Washers

#TOP2

9.8

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#TOP 3

100 Pcs Washers For Screws,M4 Washers Steel Internal 4mm External 8mm Metric Washerss

9.6

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100 Pcs Washers For Screws,M4 Washers Steel Internal 4mm External 8mm Metric Washerss

#TOP3

9.6

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Top 10 Metric DIY Washers

#TOP 1

360PCS Stainless Steel Flat Washers Set

Yibaijia

2-Dty-360-011

360PCS Flat Washers, Stainless Steel Silver Round Metric Flat Washers M2 M2.5 M3 M4 M5 M6 M8 M10 for Home Decoration Factories Repair Construction

9.9

FTB Score

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The Yibaijia Flat Washers offer a practical solution for various fastening needs. Their small but effective design helps to evenly distribute pressure on surfaces, protecting connecting parts from damage. Made from high-quality stainless steel, these washers are rust-proof and durable, ensuring long-lasting use. With eight different sizes available, you can easily select the right washer for your specific project. Additionally, they come in a convenient transparent box, making it easy for you to store and access the washers as needed.

What We Like

Durable stainless steel construction

Wide range of sizes

Easy to store and carry

Reduces friction and prevents leakage

#TOP 2

1100 Pcs Flat Washer Assortment Kit, 304 Stainless Steel, 9 Metric Sizes M2-M12, Rust-Resistant Washers

Magicave

Flat Washers-304 Stainless Steel

Stainless Steel

1100 Pcs Flat Washer Assortment Kit, 304 Stainless Steel, 9 Metric Sizes M2–M12, Rust-Resistant Washers for Screws, Bolts, Automotive, and DIY Projects

9.8

FTB Score

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Features

Premium 304 Stainless Steel – Made From High-Quality 304 Stainless Steel, These Washers Deliver Superior Rust And Corrosion Resistance, High Tensile Strength, And Long-Lasting Durability. They Offer Reliable Protection In Both Indoor And Outdoor Environments, Even Under Wet Or Corrosive Conditions.

Flat Washer Assortment Kit – This Stainless Steel Flat Washer Set Includes 1100 Pieces In Metric Sizes Ranging From M2 To M12. Perfect For Both Home Improvement And Professional Applications, It Offers Versatile Fastening, Spacing, And Load-Distributing Solutions To Ensure Stable, Long-Lasting Performance In Any Project.

Wide Applications – Compatible With Standard-Sized Screws, Nuts, And Bolts, These Stainless Steel Washers Are Ideal For Mechanical Assembly, Furniture Repair, Electrical Work, Automotive Maintenance, And Outdoor Construction Projects. Perfect For Both Professionals And DIY Enthusiasts.

Reliable Anti-Loosening Function – These Flat And Fender Washers Prevent Nuts, Bolts, And Screws From Loosening Due To Vibration Or Friction. They Distribute Load Evenly To Protect Surfaces And Maintain A Firm, Stable Connection—ensuring Dependable Performance In Machinery And Construction Applications.

Easy To Store – The Stainless Steel Washers Are Neatly Organized In A Clear, Durable, And Labeled Storage Case, Making It Easy To Find The Right Size When You Need It. Keeps Your Workspace Tidy And Efficient While Preventing Loss Or Mix-Ups.

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#TOP 3

100 Pcs Washers For Screws,M4 Washers Steel Internal 4mm External 8mm Metric Washerss

HolooVeranillo

XGP1091

100 Pcs Washers For Screws,M4 Washers Steel Internal 4mm External 8mm Metric Washerss, Assorted Hardware Repair Kits for Furniture, Bicycles, Machinery, and DIY Projects

9.6

FTB Score

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Features

[Durable Steel Construction] Crafted From High-Quality Steel, These Washers Provide Excellent Corrosion Resistance And Long-Lasting Durability For Both Indoor And Outdoor Applications.

[Precision Sizing For M4 Screws] These Washers Feature Exact 4mm Inner Diameter And 8mm Outer Diameter Specifications, Ensuring Perfect Compatibility With Standard M4 Screws And Bolts For Secure Fastening.

Wide Application CompatibilitySuitable For Furniture Assembly, Bicycle Repairs, Automotive Maintenance, Electronic Devices, And Industrial Equipment—versatile For Both Light And Heavy-Duty Use.

Vibration Resistance & Load DistributionThe Flat Design Effectively Distributes Pressure And Prevents Loosening From Vibrations, Making Them Ideal For Machinery, Furniture, And Equipment Subject To Movement Or Stress.

100-Piece Value PackBulk Quantity Meets Various Project Needs Without Frequent Reordering, Perfect For Professional Technicians, DIY Enthusiasts, And Maintenance Workshops.

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#TOP 4

Okeno Select 140 Pcs 304 Stainless Steel Flat Washers Assortment Kit, Metric Flat Body Repair Washers Set

Okeno Select

OQN-UK-TQTZ-140

silver

M4 M5 M6 M8 M10

Okeno Select 140 Pcs 304 Stainless Steel Flat Washers Assortment Kit, Metric Flat Body Repair Washers Set Cover

Okeno Select 140 Pcs 304 Stainless Steel Flat Washers Assortment Kit, Metric Flat Body Repair Washers Set for Bolts & Nuts, M4 M5 M6 M8 M10 Sizes, Rustproof Metal Shims for DIY, Machinery, Automotive

9.4

FTB Score

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Features

Precision Design:Manufactured With High-Precision Tooling, These Shims Feature Consistently Accurate Inner And Outer Diameters To Perfectly Match Corresponding Screws, Nuts, And Threaded Rods. This Ensures Optimal Alignment With Your Fixtures And Components, Enabling Seamless Installation And Enhanced Mechanical Performance.

304 Stainless Steel:Crafted From High-Quality 304 Stainless Steel, This Washer Set Delivers Exceptional Corrosion And Rust Resistance, Ensuring Long-Lasting Performance In Both Indoor And Outdoor Applications. The Durable Composition Maintains Structural Integrity Over Time, Providing Reliable Functionality Across Various Environments.

Smooth Construction:Each Stainless Steel Washer Features Meticulously Polished, Burr-Free Surfaces And Edges To Prevent Scratching During Assembly. The Smooth Finish Reduces Friction Between Components While Increasing Operational Safety And Ensuring Damage-Free Installation.

Effective Load:Specially Designed To Enlarge The Contact Area And Evenly Distribute Pressure From Fasteners. This Prevents Surface Damage, Loosening Under Vibration, And Potential Pull-Through Failures While Maintaining Stable, Secure Connections In Both Static And Dynamic Applications.

Comprehensive Set For Multiple:This Versatile Collection Includes 140 Washers In Various Sizes Suitable For DIY Projects, Furniture Manufacturing, Machinery Maintenance, Marine Components, And Equipment Assembly. Whether For Household Repairs Or Industrial Use, This Set Meets Diverse Fastening Requirements While Offering Organized Storage Convenience.

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#TOP 5

180pcs Flat Fender Washers Set,304 Stainless Steel Flat Fender Washers Assortment Set Metric M2 to M10 Hardware Fasteners Kit

lasuroa

F33063

silver

M2 to M10

180pcs Flat Fender Washers Set,304 Stainless Steel Flat Fender Washers Assortment Set Metric M2 to M10 Hardware Fasteners Kit for Screws Bolts Industrial Electrical Furniture Structural Testing

9.2

FTB Score

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Features

Product Material: Crafted From Premium 304 Stainless Steel, These Washers Offer Superior Corrosion Resistance And Durability. Unlike Cheaper Zinc-Plated Alternatives, Our Washers Won't Fade Or Degrade When Exposed To Oil Or Harsh Weather Conditions, Making Them Ideal For Automotive, Marine, And Outdoor Applications.

Product & Size: You Will Receive 180 Precision Washers—25 Pieces Of M2 (0.5cm/0.20in), 25 Pieces Of M2.5 (0.6cm/0.24in), 25 Pieces Of M3 (0.7cm/0.28in), 25 Pieces Of M4 (0.9cm/0.35in), 25 Pieces Of M5 (1cm/0.39in), 25 Pieces Of M 6 (1.2cm/0.47in), 20 Pieces Of M 8 (1.5cm/0.59in), 10 Pieces Of M10 (2cm/0.79in). Perfect For Mechanics, Engineers, And DIY Enthusiasts Needing A Full Range Of Metric Washers For Various Applications.

Wide Applications: Perfect For Automotive Repairs (engine, Suspension, Body Work), Machinery Maintenance, Furniture Assembly, Electronics Projects, Plumbing Installations, And General DIY Tasks. The Durable 304 Stainless Steel Construction Makes These Washers Suitable For Both Indoor And Outdoor Use.

Special Design: This Kit Features Both Standard Flat Washers And Fender Washers. Flat Washers Distribute Load Evenly; Fender Washers Provide Extra Bearing Surface To Prevent Pull-Through. The Polished Edges And Uniform Thickness Ensure Smooth Seating With Any Fender Bolt. All Washers Have Precision-Cut Edges For Smooth Installation Without Burrs Or Sharp Edges.

Easy To Use: Each Size Is Clearly Labeled And Separately Packaged For Easy Identification. Simply Drop The Correct Washer Over The Fender Bolt—no Tools Required. The Washers Are Compatible With Standard Metric Bolts (M2-M10) And Can Be Used For Countless Repair And Construction Projects. Their Uniform Thickness Ensures Consistent Performance In All Applications.

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#TOP 6

180 Pcs Flat Washers,Metric M2 to M10 Stainless Steel Washers

strrng

PDQZH10083

180 Pcs Flat Washers,Metric M2 to M10 Stainless Steel Washers Cover

180 Pcs Flat Washers,Metric M2 to M10 Stainless Steel Washers for Screws,Round Metal Washer,8 Sizes Assortment Silver Assorted Washer,for Home Decoration Factories Repair Construction

9.0

FTB Score

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Features

Comprehensive Size Assortment: Includes 8 Essential Metric Sizes (M2/M3/M4/M5/M6/M8/M10) To Accommodate Most Standard Bolts, Providing Versatile Solutions For Various Projects.

Premium Stainless Steel Material: Manufactured From A2-70 Grade Stainless Steel With Excellent Corrosion Resistance, Suitable For Humid Environments And Outdoor Applications While Maintaining Long-Term Reliability.

Smart 180-Piece Set: Practical Quantity Selection With Clearly Labelled Compartments For Easy Organization And Quick Access, Saving Valuable Time On Maintenance And Repair Tasks.

Precision Engineering: Laser-Cut With Consistent Thickness And Smooth, Burr-Free Edges To Ensure Even Load Distribution And Prevent Damage To Material Surfaces.

Industrial-Grade Durability: Features High Tensile Strength And Vibration Resistance, Effectively Preventing Fastener Loosening While Withstanding Heavy-Duty Use In Construction And Manufacturing.

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#TOP 7

232 Pcs 304 Stainless Steel Flat Penny Washers for Screws Bolts Kit - Large OD Metric Fender Washers Assortment

Kalote

M3 M4 M5 M6 M8 M10 M12

232 Pcs 304 Stainless Steel Flat Penny Washers for Screws Bolts Kit - Large OD Metric Fender Washers Assortment Cover

232 Pcs 304 Stainless Steel Flat Penny Washers for Screws Bolts Kit - Large OD Metric Fender Washers Assortment (M3 M4 M5 M6 M8 M10 M12)| Anti-Rust for Automotive, Machinery, DIY Repair

8.8

FTB Score

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Features

LARGE OUTER DIAMETER DESIGN - PREVENT DAMAGE & ABSORB VIBRATION：Go Beyond Standard Washers. Our Large OD Design Significantly Increases The Bearing Surface Area, Distributing Force And Pressure More Effectively. This Prevents Bolt Heads From Pulling Through Soft Materials Like Wood, Plastic, Or Fiberglass And Provides Exceptional Resistance Against Vibration Loosening In Machinery And Automotive Applications.

ELIMINATE RUST & CORROSION FOREVER - PREMIUM 304 STAINLESS STEEL： Stop Replacing Rusty, Weakened Washers! Forged From 18-8 (304) Stainless Steel, Our Washers Boast Exceptional Resistance To Water, Chemicals, Salt, And Extreme Temperatures. Ideal For Automotive Undercarriages, Marine Applications, And Outdoor Equipment, They Provide A Permanent, Corrosion-Proof Solution That Outlasts Cheap Zinc Or Carbon Steel Alternatives.

NEVER SEARCH FOR THE RIGHT SIZE AGAIN - 232-PC SMART ASSORTMENT：We've Done The Planning For You. This Kit Isn't Just Large; It's Intelligently Curated With Higher Counts Of The Most Frequently Used Sizes (like M3, M4, M5). With A Total Of 232 Pieces Spanning 14 Sizes From M3 To M12, It's The Most Comprehensive Kit On Amazon For Tackling Virtually Any Project Without A Last-Minute Hardware Store Run.

LIFETIME ORGANIZATION & READY-TO-GO PORTABILITY：Your Ultimate Workshop Companion. The Heavy-Duty, Compartmentalized Case Keeps Every Size Neatly Separated, Clearly Labeled, And Instantly Accessible. It's Built To Last, Ensuring Your Investment Stays Organized For Years. Grab The Entire Case And Take Your Professional-Grade Washer Selection Right To The Job Site.

ENGINEERED FOR A PERFECT FIT - PRECISION MACHINED & CONSISTENT：Experience A Flawless Fit Every Time. Each Washer Is Precision-Stamped And Deburred To Ensure Exact Inner And Outer Diameters And Consistent Thickness. This Guarantees Smooth Installation Onto Bolts, Even Torque Distribution, And A Secure, Rattle-Free Hold That Meets Professional Mechanic And Machinist Standards.

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#TOP 8

Keadic 165 Pcs Copper Flat Washers Assorted Kit, 8 Sizes , Metric Plain Washers

Keadic

Copper Washers Assorted

Keadic 165 Pcs Copper Flat Washers Assorted Kit, 8 Sizes (M6-M20), Metric Plain Washers for Home DIY, Factories, Repair, Construction

8.6

FTB Score

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Features

[Outstanding Material] Our Copper Washers Assorted Kit Is Made Of High-Quality Copper Material, Which Has Good Electrical Conductivity, Thermal Conductivity, 1083℃ Melting Point And Durable For Daily Use And Can Be Used Repeatedly.

[165 Pcs 8 Sizes Flat Washer Assortment Kit] It Is 165pcs Assorted Copper Washers Including 8 Metric Sizes: M6*10*1mm, M8*13*1mm, M10*14*1mm, M12*16*1mm, M14*18*1mm, M16*22*1.5mm, M18*24*1.5mm, M20*26*1.5mm. Widely Meet Your Various Home DIY Demands.

[Wide Application] The Copper O Ring Kit Is Great For Water, Sump Plugs, Fuel And Hydraulic Fittings. The Sump Plug Washer Kit Is Perfect For Electrical Connections On Household And Commercial Appliances, Automotive And Marine Uses. The Ring Washers Are Really Great Tools.

[Easy To Use] The Copper Sealing Washers Are Very Easy To Install, The Flat Copper Washer's Surface Are Smooth Can Reduces Friction Between The Fasteners, Prevents Leakage, Isolates, Prevents Loosening Or Dispersion Pressure.

[Easy To Storage] These Sealing Washers Are Designed With A Storage Box, Which Make Sump Plug Washers Safer And More Convenient To Store, Easy To Carry, And Keep Well Classification. This Design Will Improve Work Efficiency.

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#TOP 9

50Pcs Metric Stainless Steel Washers Kit

WL-QIANXING

M8x25x1.5mm

Silver

M8x25x1.5mm-50pcs

50Pcs Metric Stainless Steel Washers Kit Cover

50Pcs Metric Stainless Steel Washers Kit - M8 x 25mm Rust-Resistant Flat & Penny Washers for General Hardware, DIY and Machinery, Thickness 1.5mm

8.5

FTB Score

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Features

[Protects Your Workpiece Surface] The Broad, Smooth Surface Of These Flat Washers Acts As A Protective Shield. They Evenly Distribute Pressure To Prevent Bolt Heads And Nuts From Damaging, Denting, Or "pulling Through" Softer Materials Like Wood, Plastic, Or Composite Boards.

[Reliable Rust Protection] Achieve Lasting Repairs With These 304 Stainless Steel Washers. Their Exceptional Corrosion And Rust Resistance Make Them A Wise Choice For Kitchens, Bathrooms, Gardens, And Outdoor Structures.

[The Ideal Choice For DIY Enthusiasts] This Pack Of 50 M8x25mm Washers Is The Perfect Addition To Any DIY Enthusiast's Toolbox. Ideal For Assembling Furniture, Fixing Squeaky Floorboards, Mounting Shelves, Repairing Taps, Or For Countless Craft And Workshop Applications.

[Ready-To-Use Premium Specifications] Ready For Immediate Use, Straight From The Pack. Each Washer Has An Outer Diameter Of 25mm, An Inner Hole Of 8mm, And A Thickness Of 1.5mm. Precision-Manufactured To Smoothly And Reliably Match Standard M8 Fixings Every Time.

[Ensures A More Secure Fastening] Achieve A Safer And More Stable Connection. By Increasing The Clamping Area, These Washers Help Prevent Fasteners From Loosening Over Time Due To Vibration Or Stress, Giving You Peace Of Mind For Every Project.

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#TOP 10

Glarks 300Pcs 12 Size Metric Flat Ring Copper Sealing Washers Assortment Set

GLARKS

GLAHTDP-300

copper

Glarks 300Pcs 12 Size Metric Flat Ring Copper Sealing Washers Assortment Set

8.3

FTB Score

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Features

『Good Performance』: These Most Commonly Used Copper Washers Have Superior Rust Resistance And The Excellent Of Oxidation Resistance, Which Can Ensure Long Time Using And Prolong Screws Lifespan, Great For Sump Plugs, Water, Fuel And Hydraulic Fittings

『High Quality Meterial』: All The Flat Washers Are Made Of Copper, Which With High Conductivity, Corrosion Resistant. They Have A Tighter Seal And High Heat Resistance Than Steel And Rubber Washers

『Wide Application』: High Quality Copper Flat Washers With High Conductivity Perfect For Electrical Connections On Household And Commercial Appliances, Automotive And Marine Uses In Which The Power Source Has A Threaded/bolt-Type Connection

『Perfect Package』: In This Set, It Include 300Pcs Metric Flat Washers Of M5*9*1x35pcs, M6*10*1x30pcs, M6*12*1x30pcs, M8*13*1x30pcs, M10*14*1x30pcs, M8*14*1x25pcs, M12*16*1x25pcs, M14*18*1x25pcs, M16*20*1.5x20pcs, M16*22*1.5x15pcs, M12*18*1.5x20pcs, M20*26*1.5x15pcs For Your Use

『Easy To Use』: They Are Very Easy To Install, The Washer's Surface Are Smooth Can Reduces Friction Between The Screw And Nut, Prevents Leakage, Isolates, Prevents Loosening Or Dispersion Pressure

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Editor's Notes

During our metric diy washer research, we found 252 metric diy washer products and shortlisted 10 quality products. We collected and analyzed 5,117 customer reviews through our big data system to write the metric diy washers list. We found that most customers choose metric diy washers with an average price of £20.00.

The metric diy washers are available for purchase. We have researched hundreds of brands and picked the top brands of metric diy washers, including Yibaijia, Magicave, HolooVeranillo, Okeno Select, lasuroa.

Written by

Corey Phillips

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.