M2.5 (2.5mm) A2 Stainless Steel Form A Flat Washer

Form A Flat Washer

Top quality stainless steel form A flat washer supplied straight from Warrington, UK. These washers are for metric bolts and screws.

An excellent option for those in need of a durable and versatile washer is the M2.5 (2.5mm) A2 Stainless Steel Form A Flat Washer. Specialty Metals manufactures this washer with corrosion-resistant 304 Grade stainless steel. Additionally, its hygiene properties make it suitable for industries requiring a high level of cleanliness. For those looking for a long-lasting fastening solution, the flat washer design ensures a secure fit, while its low maintenance requirements make it a great choice. An excellent investment that can offer exceptional durability and reliability is the M2.5 (2.5mm) A2 Stainless Steel Form A Flat Washer.

Form A flat washer are most used around the world.

Key product details:

• Standard – DIN 125A
• Fasteners Type – Form A Flat Washer
• Thread Diameter – M2.5
• Internal Diameter – 2.7mm
• Outer Diameter – 6mm
• Thickness – 0.5mm
• Metal – Stainless steel grade 304 (A2)

Speciality Metals are the best suppliers for you because:

• FREE UK delivery on all orders
• Order dispatch within 24 hours of order
• Located in Warrington, UK which is the UK home of mesh and metals
• Our experienced staff are experts in the mesh market and care personally about your customer experience

Speciality Metals is a trusted UK based distributor of fasteners, sheet metal, flat bar and round tube. We specialise in rapid delivery to any location around the country. Our team of experienced, friendly staff are at hand at all times to process your order.

FAQs About This Product

Can Form A Flat Washers be Used with Plastic Materials?

Yes, Form A flat washers can be used with plastic materials, and they often serve to distribute the load more evenly across the surface of the plastic, thereby reducing stress concentrations. Using a washer can help prevent the plastic from warping, cracking or otherwise being damaged during the tightening of a fastener. Stainless steel Form A washers are especially useful for this purpose, as they offer good corrosion resistance and strength.

1. Compatibility: Ensure that the plastic material is compatible with stainless steel, especially in environments where chemicals or corrosive elements are present.

2. Material Strength: The plastic’s strength should be sufficient to handle the pressure exerted by the washer and the fastener. Over-tightening can cause the plastic to deform or crack.

3. Thermal Expansion: Plastics usually have a higher coefficient of thermal expansion compared to metals. This difference can lead to loosening of the fastener over time and temperature changes, so periodic inspection and retightening might be required.

4. Surface Hardness: Stainless steel washers could potentially mar or scratch softer plastic surfaces, so the application and aesthetic requirements should be considered.

5. Galvanic Corrosion: While less of an issue with plastic, be cautious if other metals are also in the assembly, as they may cause galvanic corrosion with the stainless steel washer.

6. Washer Size: The size of the Form A washer should be appropriate for the size of the fastener and the plastic material’s thickness. Using a washer that’s too large or too small can lead to issues like insufficient load distribution or aesthetic concerns.

7. Environmental Conditions: If the application is outdoors or in a corrosive environment, make sure that both the plastic and the stainless steel are suited for those conditions.

How Should Stainless Steel Washers be Stored?

1. Dry Environment: Stainless steel washers should be stored in a dry environment to prevent moisture-induced corrosion. Even though they are corrosion-resistant, they are not entirely corrosion-proof.

2. Temperature-Controlled: Store them in a temperature-controlled space if possible. Extreme temperature fluctuations can cause condensation, leading to potential corrosion.

3. Packaging: Keep the washers in their original packaging until you’re ready to use them. The packaging usually offers some degree of protection against environmental factors.

4. Ventilation: Ensure that the storage area is well-ventilated to prevent the build-up of humidity, which can lead to corrosion over time.

5. Separated Metals: If you’re storing different types of metal washers, it’s a good idea to keep them separate to prevent galvanic corrosion. This is particularly important in damp environments.

6. Elevate Off the Floor: Keep the washers elevated off the floor, on shelves or pallets, to minimise the risk of water damage from spills or flooding.

7. Cleanliness: Ensure the storage area is clean and free from chemicals, salts and other corrosive substances.

8. Inventory Rotation: Older stock should be used before newer stock to ensure that no washers are left sitting for extended periods, which could lead to corrosion or degradation over time.

9. Inspection: Periodically inspect the washers for signs of corrosion, discoloration or other types of degradation. If any washers show signs of damage, they should be separated from the others to prevent potential issues from spreading.

10. Sealing: For long-term storage, consider sealing the washers in airtight bags with desiccants to absorb any moisture. Vacuum-sealing can also be an effective method for long-term storage.

What’s their Environmental Impact?

Stainless steel washers, particularly those made from 304-grade material, have a mixed environmental impact. On the positive side, stainless steel is highly durable and recyclable, meaning that these washers can often be reused or melted down to produce new products, reducing waste and the need for new raw materials. The long lifespan of stainless steel washers also means less frequent replacement, leading to fewer resources used over time. However, the production of stainless steel is energy-intensive and involves the extraction of raw materials like iron ore, chromium and nickel, which has environmental costs in terms of energy consumption, greenhouse gas emissions and potential habitat disruption. Additionally, the use of chemicals in the refining process can pose environmental risks if not properly managed. Therefore, while stainless steel washers may have advantages in terms of durability and recyclability, their production does have environmental impacts that need to be carefully managed. Increasingly, steel manufacturers are adopting more sustainable practices, including the use of recycled materials and cleaner production processes, to mitigate these impacts.

What are the Thermal Properties of Stainless Steel Flat Washers?

Stainless steel flat washers, especially those made from grades like 304 or 316, have unique thermal properties that make them suitable for a variety of applications. These washers typically have a higher coefficient of thermal expansion compared to other metals, meaning they will expand and contract more with changes in temperature. Despite being poor conductors of heat, they are heat-resistant and can typically withstand temperatures up to around 870°C (1600°F), depending on the grade.

At high temperatures, they usually form a protective oxide layer that helps shield against further oxidation. They also perform well in cold conditions, retaining their mechanical strength and toughness. Some stainless steel grades can be heat-treated to improve their mechanical properties, although this isn’t typically a major consideration for washers. While generally robust, rapid temperature changes can introduce stresses in stainless steel washers, but this is often not a significant concern in typical applications. 

Check out our blogs discussing Stainless Steel Form A Washers. It will prove a useful read to help you to make an informed decision on which material would work best for you. 

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