Best Cup Washers of 2026

Brian Howie Avatar
Brian Howie
Last Updated: Jan 8, 2026

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Cup washers are small yet essential hardware components used in various applications. These washers are designed with a cup-like shape that allows them to distribute the load evenly and prevent damage to the material being fastened. Cup washers are commonly used in automotive, construction, and plumbing industries to provide stability and reduce the risk of loosening or vibration. They are available in different materials such as stainless steel, brass, or nylon, catering to specific requirements. With their reliable performance and durability, cup washers are a reliable choice for ensuring the longevity and integrity of various assemblies.

At a Glance: Our Top Picks

uxcell M4 Cone Cup Washers Cover #TOP 1
uxcell M4 Cone Cup Washers
ftb score rating icon 9.8
qxayxa 300 Pcs Stainless Steel Washers Cover #TOP 2
qxayxa 300 Pcs Stainless Steel Washers
ftb score rating icon 9.7
OrangeTag Double Brush Cup Washer Cover #TOP 3
OrangeTag Double Brush Cup Washer
ftb score rating icon 9.5

Top 10 Cup Washers

#TOP 1

uxcell M4 Cone Cup Washers

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Black
uxcell M4 Cone Cup Washers Cover
uxcell M4 Cone Cup Countersunk Washers, 20 Pcs Anodized Aluminum Gaskets Cup Head Washer Gasket, Cup Screw Counterbore Gasket for Mechanical Accessories Parts, Black

The uxcell Cone Cup Washers are designed to meet your fastening needs with ease. Featuring a 7.5mm counterbore diameter, these washers fit snugly between the screw head and the surface, ensuring a secure hold. Made from durable aluminum alloy, they resist rust and corrosion, promising longevity in various applications. Their anodized finish not only enhances durability but also provides a clean, decorative look by concealing unsightly drill holes. Installation is straightforward, allowing you to quickly and effectively use these washers in construction, automotive, or machinery projects.

What We Like
Durable aluminum construction
Corrosion-resistant anodized finish
Easy installation process
Conceals drill holes
Wide application versatility
#TOP 2

qxayxa 300 Pcs Stainless Steel Washers

QUS-008
silver
6#, 8#, 10#, 12#
qxayxa 300 Pcs Stainless Steel Washers Cover
qxayxa 300 Pcs Finish Washers,Finishing Washers, Countersunk Washers, #6#8#10#12 Stainless Steel Cup Countersunk Finish Washers Set, Finishing Cup Countersunk Washer Assortment Kit

The qxayxa Stainless Steel Washers are made from high-quality stainless steel, ensuring they resist corrosion and rust, making them perfect for use in damp environments. These finishing washers create a clean, flush surface under flat or oval head screws, enhancing the cosmetic appeal of your projects. They come neatly organized in a sturdy, transparent storage box, making it easy for you to carry and access the washers without confusion. With a versatile assortment of sizes, these washers are ideal for various applications, from securing lightweight materials to providing a polished finish.

What We Like
Durable stainless steel material
Organized storage box
Flush surface appearance
Versatile size assortment
#TOP 3

OrangeTag Double Brush Cup Washer

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Black&white
OrangeTag Double Brush Cup Washer Cover
Glass Cup Washer With Double Bristle Brush for Bar Kitchen Sink

The OrangeTag Cup Washer features a double brush design that makes cleaning your glassware quick and effortless. With three strong suction cups, it securely attaches to your sink, ensuring stability while you scrub. The detachable brush allows for easy disassembly and installation, so you can maintain it without any special tools. Made from high-quality PVC and PP materials, this brush is both toxic and BPA-free, providing peace of mind for you and your family. Enjoy a thorough clean for various types of glassware, making it ideal for busy kitchens and bars.

What We Like
Effortless glass cleaning
Secure suction attachment
Tool-free assembly
Toxic and BPA-free materials
#TOP 4

uxcell M5 Cone Cup Washers

f24041600ux4057
Silver
uxcell M5 Cone Cup Washers Cover
uxcell M5 Cone Cup Countersunk Washers, 30 Pcs Anodized Aluminum Gaskets Cup Head Washer Gasket, Cup Screw Counterbore Gasket for Mechanical Accessories Parts, Silver

The uxcell Cone Cup Washers are designed for easy installation and reliable performance. With a counterbore diameter of 8.7mm, these aluminum washers fit snugly between the screw head and the surface, ensuring a secure hold. Their anodized finish enhances corrosion resistance, making them perfect for various applications, from construction to automotive. Made from durable aluminum alloy, they resist rust and deformation, providing long-lasting use. Additionally, they can conceal unsightly drill holes, giving your projects a clean and polished look.

What We Like
Durable aluminum construction
Corrosion-resistant anodized finish
Easy installation process
Conceals drill holes
#TOP 5

uxcell M3 Anodized Aluminum Cone Cup Washers, 20 Pcs

f24041600ux4086
Sky Blue
uxcell M3 Anodized Aluminum Cone Cup Washers, 20 Pcs Cover
uxcell M3 Cone Cup Countersunk Washers, 20 Pcs Anodized Aluminum Gaskets Cup Head Washer Gasket, Cup Screw Counterbore Gasket for Mechanical Accessories Parts, Sky Blue

The uxcell M3 Cone Cup Washers come in a pack of 20, providing you with enough washers for everyday projects. Each washer has a precise size that fits well with M3 screws, ensuring you pick the right fit for your needs. Made from durable aluminum alloy, these washers resist rust and corrosion, so they last longer and stay strong without bending easily. The anodized finish adds extra protection against wear and gives a neat look by covering up any rough holes from drilling. Installing these washers is simple—you just place them between the screw head and the surface, then tighten the screw to secure everything firmly in place.

What We Like
Durable aluminum material
Corrosion-resistant anodized finish
Precise size for M3 screws
Easy installation
Includes 20 washers
#TOP 6

FEENM Water Bottle Cleaning Brush with Suction Base

3-Ping-Brush
Black
FEENM Water Bottle Cleaning Brush with Suction Base Cover
Water Bottle Cleaning Brush Glass Cup Washer with Suction Base 3 Head Bristle Brush for Beer Cup, Long Leg Cup, Red Wine Glass & More Bar Kitchen Sink Home Tools

The FEENM Suction Cup Brush is designed to make cleaning your cups and bottles easier. Its durable PVC body and strong nylon bristles ensure it can handle everyday scrubbing without wearing out quickly. Thanks to the four suction cups at the base, the brush stays firmly attached to your sink, giving you a stable cleaning experience without slipping. The brush comes with three detachable heads, allowing you to clean a variety of glassware, from tall bottles to short cups. Plus, the rotating brush heads are easy to remove and wash, helping you keep the tool clean and hygienic after every use.

What We Like
Durable PVC and nylon build
Strong four-point suction base
Three detachable brush heads
Easy-to-clean rotating design
#TOP 7

uxcell M4 Anodized Aluminum Cone Cup Washers, 50 Pcs

f24042700ux0005
Black
uxcell M4 Anodized Aluminum Cone Cup Washers, 50 Pcs Cover
uxcell M4 Cone Cup Countersunk Washers, 50 Pcs Anodized Aluminum Gaskets Cup Head Washer Gasket, Cup Screw Counterbore Gasket for Mechanical Accessories Parts, Black

The uxcell M4 Cone Washers come in a pack of 50, giving you plenty to handle everyday projects. Each washer measures 12x4x4.7mm, so make sure you pick the right size for your needs. Made from durable aluminum alloy, these washers resist rust and corrosion, ensuring they last a long time without bending or breaking. Their smooth, burr-free surface makes installation easier and safer. Plus, the anodized finish adds extra protection against wear and gives your work a clean, polished look by covering up rough drill holes. You'll find these washers simple to install, fitting snugly between the screw head and surface for a secure hold.

What We Like
Durable aluminum alloy
Anti-rust and corrosion resistant
Easy installation
Clean, decorative finish
Includes 50 washers
#TOP 8

Rrina 160Pcs Finishing Cup Washers Assortment Kit

WD036
One Size
Rrina 160Pcs Finishing Cup Washers Assortment Kit Cover
Rrina 160Pcs 304 Stainless Steel Finishing Cup Countersunk Washers Assortment Kit, 6#/ 8#/ 10#/ 12#

Rrina Finishing Cup Washers Assortment Kit is made of high quality 304 Stainless Steel, ensuring durability and resistance to rust, moisture, and corrosion. With 160Pcs in 4 different sizes, this kit is suitable for preventing nuts, bolts, or screws from pulling through the material. The finish washers are designed to accommodate the heads of a countersunk screw, providing a finished appearance. The practical plastic heat seal packaging makes it convenient to store and the durable divided storage case with size labels and dividers ensures easy organization. With Rrina Finishing Cup Washers, you can enjoy the convenience of a well-organized and reliable assortment kit for your various projects.

What We Like
Durable
Corrosion resistant
Convenient packaging
#TOP 9

uxcell #8 304 Stainless Steel Cup Washer 100pcs

a21060800ux0318
grey
uxcell #8 304 Stainless Steel Cup Washer 100pcs Cover
uxcell #8 304 Stainless Steel Cup Washer Countersunk for Screw Bolt 100pcs

The uxcell Stainless Steel Washers come in a convenient pack of 100, measuring 4.8mm by 13.5mm with a thickness of 2.5mm. Made from durable 304 stainless steel, these washers resist corrosion, making them ideal for outdoor use and ensuring long-lasting performance. They help secure nuts, bolts, or screws by preventing them from pulling through the material, which protects your work and adds stability. These washers are also perfect for electrical connections in both home and commercial appliances, giving you a reliable and easy-to-install solution for various fastening needs.

What We Like
Corrosion resistance
Prevents pull-through
Outdoor application
Easy installation
Electrical connection use
#TOP 10

uxcell M6 Cone Cup Countersunk Aluminum Washers, 20 Pcs

f24041600ux4064
Black
uxcell M6 Cone Cup Countersunk Aluminum Washers, 20 Pcs Cover
uxcell M6 Cone Cup Countersunk Washers, 20 Pcs Anodized Aluminum Gaskets Cup Head Washer Gasket, Cup Screw Counterbore Gasket for Mechanical Accessories Parts, Black

The uxcell Cone Cup Washers come in a pack of 20, making sure you have enough for your projects. Each washer measures 17.7x6x7mm, designed to fit screws perfectly and provide a secure hold. Made from durable aluminum alloy, these washers resist rust and corrosion, so they last a long time without bending or breaking. Their anodized surface adds extra protection and gives a clean, polished look by covering any unsightly holes from drilling. You’ll find these washers easy to install, sitting neatly between the screw head and the surface, helping you fasten materials securely and with a professional finish.

What We Like
Durable aluminum alloy
Corrosion-resistant anodized surface
Includes 20 washers
Easy installation
Hides drill holes
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are cupped washers used for?

Cupped washers have multiple uses. They are commonly used to cover bolts or nuts for safety or anti-tampering purposes. Cup washers can also compress insulation and sealant materials. Additionally, they can be utilized as spring retainers.

2. What is a cup washer made of?

Cup washers are typically made of light gauge steel, brass, leather, or plastic. They come in various sizes and designs. These washers serve as decorative or supportive elements for screws and bolts. They are also used in insulation applications.

3. Why use domed tap washers?

Domed tap washers are a matter of personal preference and usage. Some plumbers recommend flat washers for heavy-handed tap usage. However, if you are still experiencing drips despite using a flat washer, domed tap washers can be more forgiving as they don't rely solely on pressure to create a seal.

4. Do you use washers with flange nuts?

Flange nuts have a protruding rim that acts as a built-in washer. Therefore, using a separate washer is not necessary when using flange nuts. Washers and flange nuts are both fasteners and are commonly used together with bolts to provide secure connections.

Editor's Notes

During our cup washer research, we found 24 cup washer products and shortlisted 10 quality products. We collected and analyzed 5,555 customer reviews through our big data system to write the cup washers list. We found that most customers choose cup washers with an average price of $12.05.

The cup washers are available for purchase. We have researched hundreds of brands and picked the top brands of cup washers, including uxcell, qxayxa, OrangeTag, FEENM, Rrina. The seller of top 1 product has received honest feedback from 6,100 consumers with an average rating of 4.8.

Written by
Brian Howie Avatar

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.