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Item #:
208831987
Stainless Steel Fasteners Hardware Concave and Convex Gasket Fisheye Rugged Gasket Cone Bowl Shape Countersunk Solid Metal Finishing Cup Washers
79% of respondents would recommend this to a friend
Item #:
208831987
LAK 265385
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
In stock
Imported from USA store
QTY:
Only 1 item left in stock.
Order now and get it around Thursday, October 08
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These finishing washers will give a top class finish to any project, offering strength and durability.
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What Stands Out
Durable Material
Made from high-quality stainless steel, these fasteners offer superior corrosion resistance and longevity, ensuring they withstand harsh environments and heavy usage.
Innovative Design
The concave and convex gasket design provides enhanced sealing capabilities, effectively preventing leaks and ensuring a tight fit in various applications.
Versatile Usage
Ideal for a range of projects, these countersunk solid metal finishing cup washers are perfect for automotive, household, and industrial applications, adding both functionality and aesthetic appeal.
Product Details
| Size Name | M8x20x5 (1Pcs) |
| Number of Pieces | 1 |
| Material Type | Stainless Steel |
| Metal Type | Stainless Steel |
| Brand | Yudesun |
| Manufacturer | Yudesun |
| Unit Count | 1 Count |
| Number Of Items | 1 |
| Part Number | DMYLUOS02-M8x20x5ydsfba |
| Material | Stainless Steel |
| Size | M8x20x5 (1Pcs) |
| Item Weight | 1 lbs (450 grams) |
Who Should Buy?
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DIY Enthusiasts
Perfect for those who enjoy home improvement projects requiring durable, reliable fastening solutions.
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Automotive Professionals
Ideal for mechanics needing strong, rust-resistant washers for vehicle assembly and repairs.
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Structural Engineers
Suitable for supporting structures with its robust form ensuring stability and strength in construction.
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Casual Users
Not suitable for those who only need lightweight or non-structural fastening solutions occasionally.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What are stainless steel fasteners used for?
Answer: Stainless steel fasteners are used in a variety of applications, particularly where resistance to corrosion is crucial. Their resistance to rust and degradation makes them ideal for outdoor constructions, automotive parts, and marine environments. They provide strong and secure fittings, ensuring that assemblies remain intact even under harsh conditions. -
Question:
What is the difference between concave and convex gaskets?
Answer: Concave gaskets are designed to compress and seal surfaces effectively by creating a reverse curve that accommodates uneven surfaces, whereas convex gaskets feature a bulging shape that distributes pressure over a larger area. Both types serve the purpose of preventing leaks, making them suitable for applications in plumbing, machinery, and automotive components, where sealing is critical. -
Question:
How do I choose the right size of cup washers?
Answer: Selecting the correct size of cup washers depends on the size of the screw or bolt being used. For M8x20x5 fasteners, the washer must fit within the dimensions to provide optimum load distribution. Measure the bolt diameter, length, and gauge, and ensure the washer's internal diameter is adequate. In applications like furniture assembly or machinery, proper sizing will enhance stability and reduce wear. -
Question:
What materials are commonly used for fasteners and why?
Answer: Common materials for fasteners include stainless steel, carbon steel, and nylon. Stainless steel is favored for its durability and corrosion resistance, making it perfect for outdoor and marine usage. Carbon steel is strong and economical but may rust without proper coating. Nylon offers lightweight, non-metallic options in applications requiring electrical insulation. Understanding material properties helps in choosing the right fasteners for specific environments. -
Question:
What applications are suitable for fish-eye gaskets?
Answer: Fish-eye gaskets are often utilized in applications requiring a broad seal under fluctuating pressures, such as in automotive engineering or HVAC systems. Their unique shape helps ensure a tight fit, preventing leaks in high-pressure situations. These gaskets are ideal for sealing respiratory valves, exhaust systems, and hydraulic controls where traditional seals might fail. -
Question:
What are the benefits of using stainless steel cup washers?
Answer: Stainless steel cup washers provide several benefits, including resistance to rust, superior strength, and longevity. Their shape allows for better load distribution and reduces the risk of damage to the surfaces they are mounted on. By using these washers in mechanical assemblies or outdoor installations, users can enhance the durability of their projects, preventing failures caused by corrosion or loosening over time. -
Question:
How do I maintain stainless steel fasteners and gaskets?
Answer: Maintaining stainless steel fasteners and gaskets involves regular inspection for signs of wear or corrosion. To clean them, use a mild detergent and water; avoid abrasive materials. Lubrication may be necessary for moving parts to prevent seizing. In environments with high humidity or exposure to aggressive chemicals, more frequent checks are advisable to ensure optimal performance in applications like marine or industrial setups. -
Question:
Can these fasteners be used in high-temperature environments?
Answer: Yes, stainless steel fasteners are generally resistant to high temperatures, making them suitable for applications in industries such as automotive and aerospace. However, it’s important to check the specific grade of stainless steel being used, as different alloys have varying temperature tolerances. For instance, using these fasteners in exhaust systems or heat exchangers ensures secure fittings under thermal stress. -
Question:
What does M8x20x5 mean in fasteners?
Answer: M8x20x5 indicates the specifications of the fastener where 'M' stands for metric, '8' is the diameter in millimeters, '20' denotes the length of the screw or bolt, and '5' refers to the thickness or size of the attached washer. Understanding these specifications is crucial for selecting the right fastener for your project, whether it's in construction, automotive repairs, or machinery assembly. -
Question:
Where can I buy Stainless Steel Fasteners Hardware Concave and Convex Gasket Fisheye Rugged Gasket Cone Bowl Shape Countersunk Solid Metal Finishing Cup Washers M8x20x5 in Laos?
Answer: You can buy Stainless Steel Fasteners Hardware Concave and Convex Gasket Fisheye Rugged Gasket Cone Bowl Shape Countersunk Solid Metal Finishing Cup Washers M8x20x5 at Ubuy in Laos. Ubuy offers a wide range of fasteners and hardware tailored to various projects, ensuring you have access to high-quality products for your needs.
Yudesun Flat Washers Editorial Review
Stainless Steel Fasteners Hardware Concave and Convex Gasket Fisheye Rugged Gasket Cone Bowl Shape Countersunk Solid Metal Finishing Cup Washers M8x20x5 offers a durable and shiny appearance due to its solid stainless steel construction, making it an excellent choice for mounting acrylic sheets to wood without causing indentations. Many users appreciate the pressure distribution that this washer provides, distinguishing it from standard sheet metal washers that can leave circular impressions. However, some customers mentioned that the product's cost may seem high for only one fastener, and issues like burrs have been noted. Overall, if you prioritize quality and appearance in your fasteners, this product is worth considering.
Customer Reviews & Ratings
3 customers ratings
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5 Star
31%
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4 Star
31%
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3 Star
0%
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1 Star
38%
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Pros
- Made from durable stainless steel material
- Distributes screw pressure evenly
- Prevents circular indentations on surfaces
- Compact size of M8x20x5 for versatility
- Shiny finish enhances aesthetic appeal
Cons
- Relatively high price for a single piece
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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LAK 265385
Order now and get it around Thursday, October 08
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 1 item left in stock.
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PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Features & Benefits
- Set includes 15pcs of high-quality stainless steel washers.
- Flat, countersunk, locking, and finishing washers available for versatile use.
- Designed for load distribution and secure fastening in various applications.
- Excellent corrosion resistance in harsh environments, ensuring long-lasting performance.
- Ideal for professionals and DIY enthusiasts in projects like automotive and marine.
- Provides a superior finish compared to standard pressed cup washers.
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