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5 Best Flat Washers of 2026

Last Updated - 2026/04/04

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Toolly

Toolly Large Penny Fender Washers, 225 Pieces 15 Sizes Alloy Steel Flat Washers Set Washers Hardware Assortment -M3 M4 M5 M6 M8 M10 M12

Toolly

CA$25.99

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Main highlights
- 【Wide Application】 Perfect for electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded/bolt-type connection.
- 【Specs】 15 Sizes of the most commonly used large pennny fender washers: M3*15*0.8MM,M4*20*1.2MM,M4*25*1.5MM,M5*20*1.2MM M5*25*1.5MM,M6*20*1.5MM,M6*25*1.5MM,M6*30*1.5MM M8*20*1.5MM,M8*25**1.5MM,M8*30*1.5MM,M10*20*1.5MM ,M10*25*1.5MM,M10*30*1.5MM,M12*24*1.5MM.
- 【High Quality】 All the flat washers are made of 304 stainless steel, which offers good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. They have superior rust resistance and the excellent of oxidation resistance.
- 【Functions】 Flat washers are mainly used to reduce pressure and friction, prevent leakage, isolate, loosening or disperse pressure.
- 【Easy to Use】 They are very easy to install, the washer's surface are smooth can reduces friction between the fasteners, prevents leakage, isolates, prevents loosening or dispersion pressure.
CA$25.99
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

IEAWISL

1050Pcs Flat Washers Set, 304 Stainless Steel Flat Washers for Screws, Assorted Sizes (M2 M2.5 M3 M4 M5 M6 M8 M10 M12) for Industrial Use

IEAWISL

CA$13.87

More Details
Main highlights
- 【WIDE RANGE OF APPLICATIONS】This washers for bolts assortment set kit is suitable for both professional use and DIY projects, 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.
- 【TOP 304 STAINLESS STEEL】1050pcs Flat Washers are made of high-strength materials with have good corrosion resistance in bad environment like high temperature, cold weather, or high humidity areas. They have superior rust resistance and excellent oxidation resistance, which can ensure long time using.
- 【PROVIDE EXQUISITE STORAGE BOX】In order to solve the problem of breakage or size confusion after you receive the washers for bolts kit, we have reinforced and thickened the box with clear size labels attached to the front and back of the box, which can make it easy for you to quickly find the size you need for your work and improve your efficiency.
- 【PERFECT WASHERS SET】In IEAWISL washers for screws Assortment have 9 most popular sizes for daily life, which are - M2 M2.5 M3 M4 M5 M6 M8 M10 M12, making up 1050pcs. Our flat washers are the largest combination of size and quantity on the market, enough to help you handle a variety of fastening tasks.
- 【BEST AFTER-SALES SERVICE】- IEAWISL provide you with a 1-year warranty, a 30-day return guarantee and 7x24 hours after-sales service, any product problems can be quickly solved. If you have any dissatisfaction with our products, please contact us at any time and your needs will be meet.
CA$13.87
3
Best Value

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

KANSPHY

1/4" Stainless Flat Washer, 5/8" Outside Diameter, 18-8(304) Stainless Steel Washers Flat (100 Pcs)

KANSPHY

CA$9.99

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Main highlights
- These washers are used to distribute loads of threaded bolts, screws and nuts, provide a smooth-bearing surface
- These flat washers fit over 1/4 and M6 bolts. Perfect for indoor and outdoor use
- Package includes 100 Pcs flat washers
- Material: Made of 304 Stainless Steel for increased corrosion resistance
- 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
CA$9.99
4

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

GLARKS

Glarks 100Pcs M4 x 20mm Large Fender Washers 304 Stainless Steel Flat Washers Set for Screw Hardware Lock

GLARKS

CA$10.99

More Details
Main highlights
- ♛【Wide Application】: These washers can be used with screws, nuts and bolts of matched sizes, the fender washers with solid bearing surface can prevent nut/bolt head from tearing through material. Ideal for electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded/bolt-type connection.
- ♛【Weak Magnetic】: Under normal circumstances, stainless steel materials are not with magnetic, but the product will bring magnetic after processed by machine which bring magnetic, so magnetic properties of 304 steel always show weak magnetic properties.
- ♛【Package Includes】: It contains 100pcs 4mm x 20mm large fender washers, thickness are 1.2mm. Sufficient quantities can satisfy almost all your needs in daily life and work.
- ♛【High Quality Material】: All the flat washers are made of high quality 304 stainless steel, which has good performance of high hardness, corrosion resistance and rust resistance even in bad environment like high temperature, cold weather, and high humidity areas, ensures long service time.
- ♛【Function and Use】: Flat washers are well made, with smooth and shiny surface, which are mainly used to reduce pressure and friction, prevent leakage, isolate, loosening or disperse pressure. Suitable for indoor and outdoor usage.
CA$10.99
5

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

PATIKIL

PATIKIL 304 Stainless Steel Flat Washer, 100 Pack M3 Thickness Metal Washers Small Washers for Screws Bolts Assortment (3x12x1 mm)

PATIKIL

CA$10.79

More Details
Main highlights
- NOTE: Please confirm the size before placing an order.
- Material: 304 Stainless Steel; Size: 3x12mm / 1/8x4/9inch (ID*OD); Thickness: 1mm / 0.04inch; Packing List: 100 x Washers
- Instruction: Place the lock washer under the bolt or nut and use a wrench or wrench tool to tighten the bolt or nut.
- Application: Flat washers are used with bolts or screws and are suitable for various locations that require firm fastening. They can be used in automotive, industrial, construction, home applications and storage.
- Advantage: 1. The fender washer is made of premium 304 stainless steel, which has complete specifications, with high hardness, strong toughness, wear resistance, rustproof, high corrosion resistance, and durability. 2. The spring washer can protect fastened components from loosening. The smooth burr-free surface finish allows for easy installation and prevents damage to the components used.
CA$10.79

5 Best Flat Washers of 2026

Toolly Large Penny Fender Washers, 225 Pieces 15 Sizes Alloy Steel Flat Washers Set Washers Hardware Assortment -M3 M4 M5 M6 M8 M10 M12

1050Pcs Flat Washers Set, 304 Stainless Steel Flat Washers for Screws, Assorted Sizes (M2 M2.5 M3 M4 M5 M6 M8 M10 M12) for Industrial Use

1/4" Stainless Flat Washer, 5/8" Outside Diameter, 18-8(304) Stainless Steel Washers Flat (100 Pcs)

Glarks 100Pcs M4 x 20mm Large Fender Washers 304 Stainless Steel Flat Washers Set for Screw Hardware Lock

PATIKIL 304 Stainless Steel Flat Washer, 100 Pack M3 Thickness Metal Washers Small Washers for Screws Bolts Assortment (3x12x1 mm)

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