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 |
|---|---|---|---|---|
| Moofin | 9.88 | ✅ | ✅ | ✅ |
Tough, flexible rubber construction
3/8L trade size -11/16 in. OD
Designed to withstand harsh chemicals
High abrasive resistance and temperature resistance
Use on “quick-opening” style faucets
Designed to allow full water flow and provide a positive shut off
10 flat washers per card
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
COMPLETE HOME RUBBER WASHER REPAIR KIT: The Danco Home Washer assortment comes with the most popular and widely used washers and includes 42 pieces in various metric and inch standard sizes for your convenience
RUBBER WASHERS - VARIED ASSORTMENT - Includes a varied assortment of washers ranging from faucet washers, hose washers, slip join washers, o-rings, sink strainer washers and bibb screws
SMALL RED WASHERS - The small red washers are specialized for outdoor spigots
DURABLE: The durable rubber construction will provide longevity and reliability and endure the rigors of everyday use
REPAIR LEAKY FAUCET - Replacing worn-out washers on a faucet stem helps repair a leaky faucet and is an inexpensive alternative to replacing an entire faucet fixture
FITS MOST REPAIRS - Most kitchen faucets or bathroom sinks that need repair will find a solution within this assortment
WHAT'S INCLUDED - You will find a variety of: Size 0 beveled washers, 3/8′ x 8-32 Round head screws, 3/8′ x 10-24 Slotted screws, #8 O-rings, #12 O-rings, Round hose washer, Sink strainer washers, Type K slip joint washers, Type J friction washers, Type K friction washers, Tank bolt washers, 3/8′ Cone washers,1-1/2′ x 1-1/4′ Slip joint washers, 1R Ballcock washers, 7R Ballcock washers, 00 Beveled washers, 1/4 Flat washers, 0 Flat washers, and 00 Flat washers
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Durable rubber construction
Flat faucet washers
Provides positive shut off
3/8L trade size - 11/16 in. OD
Convenient 200/jar
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Contains 10 assorted flat washers and 4 screws
Tough, flexible rubber
Positive shut-off
Package Weight: 136.08 grams
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Hearthshire | 9.96 | ❌ | ❌ | ❌ |
The flat design allows a full flow of water as well as provides positive shut-off, abrasion resistance and temperature resistance
These danco flat faucet washers can help you repair your leaky faucet
Flat faucet washers are used most on quick opening styles of Faucets
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
COMPLETE HOME RUBBER WASHER REPAIR KIT: The flat washer assortment comes with the most popular assortment needed for DIY or professional plumbing repairs
EXCELLENT ASSORTMENT: This faucet washer kit includes various metric and inch standard sizes for your convenience, 10 sizes ranging from 00 to 5/8
REPAIR LEAKY FAUCET - Replacing worn-out washers on a faucet stem helps repair a leaky faucet and is an inexpensive alternative to replacing an entire faucet fixture, saving water, money and expensive plumbing repairs
DURABLE RUBBER WASHERS: The durable rubber construction will provide longevity and reliability and endure the rigors of everyday use
IDEAL FOR MOST REPAIRS - Most kitchen faucets or bathroom sinks that need repair will find a solution within this assortment and these rubber washers are great options for lots of other repair projects
TOOL SHOP ESSENTIAL: Great addition to any home or professional tool shop and tool kit. A great washer assortment set to have around, sooner or later you will have to change a washer or an aging hose spigot!
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Moofin | 9.88 | ✅ | ✅ | ✅ |
*Precision molding. Use Danco Premium Flat Washers to fix your leaky faucet.
*Water resistant synthetic rubber. Repairing a dripping faucet is an easy and inexpensive alternative to replacing the entire fixture.
*Bag/21. Flat faucet washers are used most on quick opening styles of faucets.
*3/8" Large Flat Size. The flat design allows a ful; ; Brand Name: Danco Interior Diameter: 3/8 in.
*20 Per Bag. Danco 3/8 in. Dia. Rubber Washer 20 pk
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Flat faucet washers
Provides positive shut off
Contains 12 assorted sizes from 00 to 1
Kit includes 172 Pieces
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Junipers' | 9.86 | ❌ | ❌ | ❌ |
1/4 small flat size
20 per bag
Precision molding
Water resistant synthetic rubber
Bag/20
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Flat faucet washer
Provides positive shut off
5/8L in. trade size -29/32 in. OD
Durable rubber construction
1 per bag
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Durable rubber construction
3/4 trade size -1 in. OD (Box No. 23)
Flat faucet washer
Provides positive shut off
It is designed to allow full water flow
Use on "Quick-opening" style faucets
Easy to install
1 per Bag
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Junipers' | 9.86 | ❌ | ❌ | ❌ |
Precision molding The flat washer assortment comes with the most popular assortment needed for DIY or professional plumbing repairs
Replacing worn-out washers on a faucet stem helps repair a leaky faucet and is an inexpensive alternative to replacing an entire faucet fixture, saving water, money and expensive plumbing repairs
Bag/20 The durable rubber construction will provide longevity and reliability and endure the rigors of everyday use
1/4" Large Flat Size Most kitchen faucets or bathroom sinks that need repair will find a solution within this assortment and these rubber washers are great options for lots of other repair projects
Great addition to any home or professional tool shop and tool kit. A great washer assortment set to have around, sooner or later you will have to change a washer or an aging hose spigot
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Jenco Wholesale, Inc. | 9.79 | ❌ | ❌ | ❌ |
Durable rubber construction
Use for quick opening style faucets
Tough, positive shut-off
High abrasive resistance
High temperature resistance
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ShipIQ ✅ | 9.81 | ❌ | ❌ | ❌ |
Primarily used on quick-opening style faucets, allows full flow & Flat
Trade Size - 3/8 M in.
Diameter - 21/32 in.
Satisfaction Ensured.
Produced with the highest grade materials
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Gatzies | 9.78 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Gatzies | 9.78 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Moofin | 9.88 | ✅ | ✅ | ✅ |
The Danco Flat Faucet Washer is designed for a 15/32" OD faucet. It is made from high-quality rubber material to ensure durability and longevity.
The washer is classified as a Trade Size 000, indicating its specific dimensions. The flat design of the washer allows for a tight and secure seal.
The washer comes in a convenient polybag packaging, providing protection and easy storage. It is compatible with various faucet types, including kitchen, bathroom, and utility faucets.
The rubber construction of the washer helps to prevent leaks and drips. The washer is easy to install and replace, making it a convenient choice for DIY projects.
It is suitable for both residential and commercial applications. The Danco Flat Faucet Washer ensures a reliable and efficient performance, enhancing the functionality of your faucet.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Johnson hardware | 5.10 | ❌ | ❌ | ❌ |
Durable rubber construction
Flat faucet washers
Provides positive shut off
Premium CC washer 00 trade size -1/2 in. OD
Convenient 20/bag
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Moofin | 9.88 | ✅ | ✅ | ✅ |
Precise Fit: The Danco Cone Washer is designed with exact measurements featuring a 7/8" outer diameter 1/2" inner diameter and 3/8" height ensuring a snug fit for 1/2" OD tubing.
Durable Construction: Crafted from high-quality rubber material, this cone washer is built to last providing excellent resistance to wear tear and deformation.
Leak-Proof Seal: The cone shape of the washer ensures a tight and leak-proof seal preventing water or fluid leakage making it ideal for various plumbing applications.
Easy Installation: With its user-friendly design installing the Danco Cone Washer is a breeze making it a convenient solution for DIY enthusiasts and professional plumbers alike.
Versatile Use: This cone washer is suitable for a wide range of applications including faucets making it an essential component for your repair and maintenance needs.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| MaxWarehouse | 9.82 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Hearthshire | 9.96 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Discount3rdCoast | 9.81 | ❌ | ❌ | ❌ |
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| MaxWarehouse | 9.82 | ❌ | ❌ | ❌ |
1-4 Regular Flat Size
Precision Molding
Water Resistant Synthetic Rubber
Flat Faucet WasherSpecifications
Size: 0.25 in.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ❌ | ❌ | ❌ |
Water resistant synthetic rubber
3/8" regular flat size
Precision molding
20 per bag
Bag/20
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Hugo's Online | 9.54 | ❌ | ❌ | ❌ |
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Danco | 24 |
| 1St Choice | 1 |
We've carried out a comprehensive analysis of 5,083 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 $9.76, 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 25 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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