M12 (13mm) A2 Stainless Steel Form A Flat Washers

Flat Washers

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

For securing bolts and screws, flat washers are vital components that help ensure stability and prevent damage to the surface. Speciality Metals’ M12 (13mm) A2 Stainless Steel Form A Flat Washers provide a reliable solution with a host of advantages. These stainless steel products are corrosion resistant and possess hygiene properties, making them ideal for use in a variety of environments. Regardless of the project, their durability and low maintenance make them an efficient, long-lasting choice. The M12 (13mm) A2 Stainless Steel Form A Flat Washers are a reliable asset for those looking for flat washers that will stand the test of time due to their versatile application and secure design.

Form A flat metal washer that are most used around the world.

Key product details:

• Standard – DIN 125A
• Fasteners Type – Form A Flat Washer
• Thread Diameter – M12
• Internal Diameter – 13mm
• Outer Diameter – 24mm
• Thickness – 2.5mm
• 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 Washers be Used with Wood?

Yes, Form A washers can be used with wood. The primary function of a washer is to distribute the load of a threaded fastener, such as a screw or bolt, more evenly over the surface of the material being fastened. This is especially useful in softer materials like wood, where a screw or bolt head could potentially sink into the material or cause it to split.

Advantages of Using Form A Washers with Wood:

1. Load Distribution: They help in distributing the clamping force over a larger area, reducing the risk of the wood cracking or splitting.

2. Reduced Slippage: A washer can also help to reduce the chance of the fastener head slipping through the hole in the wood, providing a more secure connection.

3. Protection: Washers can help protect the wood surface from scuffs or marks that could be caused by the action of tightening the fastener.

4. Aesthetic: In some cases, washers are used for aesthetic reasons, adding a finished look to the fastened joint.

Considerations:

1. Material Compatibility: If the wood will be exposed to moisture or corrosive substances, be sure to use washers made from materials that are appropriate for those conditions, such as stainless steel.

2. Washer Size: The washer should be appropriately sized for the fastener being used and the forces it will be subjected to.

3. Wood Type: Softer woods may require larger washers to effectively distribute loads and prevent pull-through or surface marring.

4. Application Requirements: For structural or load-bearing applications, it’s essential to consult building codes or engineering guidelines to ensure the fastening system, including the washers, is appropriate for the intended use.

5. Pre-drilled Holes: In some wood applications, you may need to pre-drill holes to prevent splitting, especially near the edges or ends of the wood.

6. Countersinking: If the washer and fastener head need to be flush with the wood surface, you may need to countersink the hole. Make sure the washer is suitable for countersinking if this is required for your application.

Are Form A Flat Washers Resistant to Chemicals?

The chemical resistance of Form A flat washers depends on the material from which they are made. Since Form A is a dimensional specification and not a material specification, these washers can be made from a variety of materials, each with its own chemical resistance properties. Here are some common materials used for Form A washers and their general chemical resistance:

Stainless Steel:

• 304 Grade: Resistant to a wide range of chemicals but can be sensitive to chlorides.
• 316 Grade: Enhanced resistance due to molybdenum content, particularly good in chlorinated environments and various acids.

Carbon Steel:

• Generally poor chemical resistance and susceptible to oxidation and corrosion.

Brass and Copper:

• Good resistance to many chemicals but can be sensitive to some acids and alkalis.

Aluminum:

• Resistant to many chemicals but sensitive to strong acids and alkalis.

Plastics like PTFE (Teflon), Nylon etc.:

• Excellent chemical resistance to a wide range of substances but may have limitations in mechanical strength.

Special Alloys:

• Materials like Hastelloy, Inconel, and Monel offer superior chemical resistance but are generally much more expensive.

Factors to Consider:

1. pH Level: The acidity or alkalinity of the chemicals involved.

2. Temperature: Chemical resistance can change with temperature.

3. Concentration: Some materials may resist dilute chemicals but not concentrated forms.

4. Duration: Long-term exposure may have different effects than short-term exposure.

5. Mechanical Stress: Chemicals can cause stress-corrosion cracking in some materials under tension.

6. Compatibility: Make sure the washer material is compatible with the bolt or screw material to prevent galvanic corrosion.

Recommendations:

1. Material Safety Data Sheet (MSDS): Always consult the MSDS for the chemicals you will be exposed to for compatibility with your washer material.

2. Engineering Guidelines: For critical applications, consult engineering guidelines or experts to ensure that the material selected offers the required chemical resistance.

3. Testing: In uncertain or critical applications, conducting compatibility tests is often advisable.

Are Form A Washers FDA-Approved for Food Contact?

While the FDA doesn’t specifically approve individual components like Form A washers, it does provide guidelines on materials suitable for food contact. Stainless steel 304 is generally considered safe for food contact due to its corrosion resistance, non-reactivity with foods, durability and ease of cleaning. However, FDA compliance isn’t solely about the material; it also involves other factors such as the surface finish, the ability to clean and sanitise the equipment parts, adherence to Good Manufacturing Practices (GMP) and the overall design of the system where the washers are used. If you’re considering using 304 stainless steel Form A washers in a food processing or contact application, it’s advisable to consult experts familiar with FDA and other relevant regulations to ensure complete compliance.

Are Form A Washers Recyclable?

Yes, stainless steel 304 Form A washers are recyclable. Stainless steel is one of the most recycled materials in the world, largely because it retains its properties after recycling and can be melted down to create new steel products. The recycling process involves sorting the stainless steel from other materials, melting it down, and then refining it for use in new stainless steel products. Given that stainless steel 304 is one of the most commonly used grades, it is readily accepted at most metal recycling facilities. Recycling stainless steel is both eco-friendly and economically advantageous, as it reduces the need for raw materials and energy to produce new steel, while also diverting waste from landfills.

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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