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 construction
Measures 3/16-inch
Available in a 30 count
Use with aluminum 3/16-inch diameter rivets
Easy to use
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ValoMarket | 9.61 | ❌ | ❌ | ❌ |
Durably constructed
Durably constructed
Measures 1/8-inch
Available in a 30 count
30 aluminum flat washers
Use when riveting two soft materials together or if existing hole is too large
1/8-inch (3mm) diameter
Use with Arrow RHT300, RH200S and RL100S rivet tools
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| WoHuoDai | 8.66 | ✅ | ✅ | ✅ |
You don't have to drive miles to hardware store to buy these rivet washers, total 300pcs, excellent quality and reasonable price, isn't it your first choice?
Aluminum Pop Back-up Rivet Washers are made of high quality aluminum material, which has excellent corrosion and rust resistance, better than others on the market.
Aluminum Back Up Washers can be used indoors and outdoors, especially it still can keep stable performance when used in outdoor wet environment, very durable and also has a long service life.
Aluminum washers are lightweight and easy to store and carry, it won't take up space and you will never be disappointed.
Rivet Washers are widely used for boats, cars, planes, farm, household and other projects.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| MOORE PARTS SOURCE | 9.69 | ❌ | ❌ | ❌ |
These Aluminum Washers Make It Possible To Install 60 Degree Tapered Lug Nuts Against Aluminum Rims With Flat Surface Face
These Are A Must If Switching From Steel Wheels To Aluminum
Material: Aluminum
Sold As Pack Of 5
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| WoHuoDai | 8.39 | ✅ | ✅ | ✅ |
You don't have to drive miles to hardware store to buy these rivet washers, total 250pcs, excellent quality and reasonable price, isn't it your first choice?
Aluminum Pop Back-up Rivet Washers are made of high quality aluminum material, which has excellent corrosion and rust resistance, better than others on the market.
Aluminum Back Up Washers can be used indoors and outdoors, especially it still can keep stable performance when used in outdoor wet environment, very durable and also has a long service life.
Aluminum washers are lightweight and easy to store and carry, it won't take up space and you will never be disappointed.
Rivet Washers are widely used for boats, cars, planes, farm, household and other projects.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| LicBund | 5.68 | ✅ | ✅ | ✅ |
[Specific product parameters]: Roller length: 1-3/4 ", Roller diameter: 1".
[Applicable type]: Trailer lift, Lift bed, Lift, Simple lift door. General brands are applicable.
[Material]: The product is made of high-density aluminum alloy silver material. High quality materials are durable.
[Function]: The product can lift the trailer collection, gate lift and easily lift the gate, solving the problem of inflexibility.
[Package included]:4X rollers ,4X clevis pins, 8X flat washers, 4X locking rings. (No installation instructions)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| BUSY-CORNER | 9.91 | ✅ | ✅ | ✅ |
✔【VARIOUS SIZES】Aluminum Washers that comes in 18 Sizes: M6 M8 M10 M12 M14 M16 M18 M22 M24. Each box contains a total of 508 different washers for your infinite amount of use.
✔【WIDE APPLICATIONS】Perfect for electrical connections on household and commercial appliances, automotive, electrical applications and marine uses in which the power source has a threaded/bolt-type connection. Such as oil lines, hydraulic fittings, oil drain.
✔【ALUMINUM MATERIAL】 Busy-Corner Oil Drain Plugs have good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. They are durable for use and have a tighter seal than rubber washers
✔【PACKING】It is easy to distinguish the size of the product, It's easy to find correct oil plug gasket quickly, saves your time of running around looking for a particular size.
✔【CUSTOMER SERVICE】You are unhappy for any reason,return your kit with no questions asked and BUSY-CORNER Store will provide a full refund.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Dttenyi | 9.88 | ✅ | ✅ | ✅ |
Quality Material: this aluminum pop rivet washer is made of quality aluminum material, which has a nice corrosion resistance and rust resistance, not easy to break or deform, ensuring a long service life
Indoor or Outdoor Use: aluminum rivet washers can be applied both indoors and outdoors; Especially in outdoor wet environments, they can still maintain stable performance, very reliable to use
Easy to Store and Carry: aluminum pop rivet washers are lightweight and compact, small and portable, convenient to store and carry without taking up space; They are suitable for 3/16 inch diameter rivet
Size Details: the inner diameter of this aluminum washer is about 0.2 inches/ 5 mm, while the outer diameter is about 0.47 inches/ 12 mm; Please check the size information before purchasing
Abundant Quantity: the package comes with 600 pieces of aluminum pop rivet washers in total, such an abundant quantity that can satisfy your daily use and replacements
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| sensiprane | 9.24 | ✅ | ✅ | ✅ |
Perforated Insulation Pins: Used to support rigid board and batt type insulation on wall and ceiling applications. Perforated Insulation Hangers are also great for installing fiberglass board panels onto ceilings.
Quality Material: Made of low carbon steel, with galvanized coating and good insulation performance, the insulation dome cap washers are made of aluminum, which can be well matched with work.
Easy to Use: Simply glue/screw/nail the base of the insulation fasteners to the ceiling, pierce the fiberglass panel onto the pins (1 pin on each corner minimum) and push the washer onto the pin to hold the panel in place. Snip off the remaining part of the pin if necessary.
What You Get: 50 insulation pins, 50 self locking washers round and 50 insulation dome cap washers, sufficient quantity and various styles can meet your daily needs and replacements.
Widely Used: our insulation pins and washers are mainly applied in anchoring aspects of wall insulation house, HVAC system air duct insulation and thermal insulation. If you have any questions, please reach out to us, thank you!
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| WM&LM·Stores | 0.00 | ❌ | ❌ | ❌ |
✅Material:Aluminum Alloy Bushing Flat Washers,No Rust, Corrosion Resistance,Hardness High, No Pollution. Size: Inner diameter x Outer diameter x Length
✅Features:Standard Hole Position,Uniform Force,Not Easy To Slip,Easy To Use,Smooth Surface Without Burrs,Durable.
✅Performance:For Distributing The Load Of Threaded Bolts, Screws And Nuts,Providing A Smooth Bearing Surface.
✅Versatile:Ideal For Used In Water Hose Washers,Garden Hose, Water Faucet,Washing Machine,Shower Head And More.
✅ If You Have Any Questions About The Product, Please Feel Free To Contact Us, And We Will Do Our Best To Help You.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| WM&LM·Stores | 0.00 | ❌ | ❌ | ❌ |
✅Material:Aluminum Alloy Bushing Flat Washers,No Rust, Corrosion Resistance,Hardness High, No Pollution. Size: Inner diameter x Outer diameter x Length
✅Features:Standard Hole Position,Uniform Force,Not Easy To Slip,Easy To Use,Smooth Surface Without Burrs,Durable.
✅Performance:For Distributing The Load Of Threaded Bolts, Screws And Nuts,Providing A Smooth Bearing Surface.
✅Versatile:Ideal For Used In Water Hose Washers,Garden Hose, Water Faucet,Washing Machine,Shower Head And More.
✅ If You Have Any Questions About The Product, Please Feel Free To Contact Us, And We Will Do Our Best To Help You.
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Cxm Wlong 'Art | 2 |
| Gyhchjdz | 2 |
| Arrow | 1 |
| Arrow Fastener | 1 |
| Busy-Corner | 1 |
| Gekmor | 1 |
| Hanaive | 1 |
| Moore Parts | 1 |
| Ucarsoon | 1 |
We've carried out a comprehensive analysis of 416 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 $15.35, 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 11 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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