Best M12 Flat Washers in 2026
Daisy
Last Updated: Jul 17, 2026
Daisy
Last Updated: Jul 17, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Durable product
This product meets the customer requirement
Manufactured in China
Country of Origin: Taiwan, Province Of China
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Larger surface area than standard flat washers
Increased outer diameter to disperse pressure
Commonly used in sheet metal work, plumbing and electrical applications
Prevents a nut, bolt or screw from pulling through the material
Can also be used as a spacer
100 pieces per retail package
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Item Weight: 6.0 lb
Country of Origin: China
Brand name: Hillman
Item Dimensions: 2.31"L x 2.68"W x 1.56"H
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
CORROSION-RESISTANT FINISH: The washers’ zinc plating offers protection against rust and corrosion for durability
INCREASES FASTENER SECURITY: Flat washers are used to increase the pressure a bolt or screw provides in material
DURABLE STEEL: The washers’ durable steel material compliments the zinc finish to increase product-longevity
PART OF A COMPLETE FASTENING SOLUTION: Prevents a nut, bolt, or screw of the same finish and size from pulling through material
SPECIFICATIONS: Flat Washers, 1/2" Diameter, 9/16” Drive Size, 50 washers per pack
50 washers per retail package
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Durable product
This product meets the customer requirement
Manufactured in China
Country of Origin: China
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
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
Made Of Nylon
From The Brand Name: The Hillman Group
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Sealing And Vibration Resistant
Outstanding Corrosion Resistance
Easy To Install
From The Brand Name: The Hillman Group
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
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
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Larger surface area than standard flat washers
Increased outer diameter to disperse pressure
Commonly used in sheet metal work, plumbing and electrical applications
Prevents a nut, bolt or screw from pulling through the material
Can also be used as a spacer
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| The Hillman Group | 5 |
| Hillman | 4 |
We've carried out a comprehensive analysis of 980 reviews on flat washers, using our selection criteria to identify the best options in the fasteners. Our findings reveal that most customers typically select flat washers priced around $10.55, with top brands including wensilon, ylyl, hardlad, lupanter, kindroufly and marine bolt supply and small parts
Our team of expert editors reviewed these high-quality items and handpicked the top 9 flat washers for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the fasteners category. These include wensilong, ylyl direct, faiq ahmed, lupanter hardware store, kindroufly and marine bolt supply and amazon.com .
We are dedicated to assisting our users in finding the right washers Products based on their needs, saving them considerable time when choosing which flat washers to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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