M12 (12mm) A2 Stainless Steel Dome Head Cup Domed Nuts

Domed Nuts

Top quality stainless domed nuts supplied straight from Warrington, UK.

Domed nuts are one of the most reliable and sturdy mechanical fasteners available. The M12 (12mm) A2 Stainless Steel Dome Head Cup Domed Nuts from Speciality Metals fit the bill nicely for a truly resilient option. Domed nuts made from stainless steel 304 are durable and versatile, able to handle many different types of mechanical loads. But what makes these domed nuts truly special is their extreme corrosion resistance. Because of this, they are perfect for outdoor or humid environments, where other fasteners might rust and deteriorate. You can trust these domed nuts to stay secure for many years to come because they require very little maintenance.

Standard nuts are not as aesthetically pleasing as domed nuts.

Key product details:

• Standard – DIN 1587
• Fasteners Type – Dome Nut
• Thread Diameter – M12
• Pitch – 1.75mm
• Spanner Size – 19mm
• 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

Are Dome Nuts Suitable for Electrical Applications?

Yes, dome nuts, particularly those made of Stainless Steel 304, can be suitable for electrical applications:

1. Conductivity: Stainless Steel 304 is not a good conductor of electricity, so if electrical conductivity is a requirement, dome nuts made from this material may not be the best choice.

2. Corrosion Resistance: Stainless Steel 304 offers excellent corrosion resistance, which is crucial in electrical applications where corrosion can lead to poor connections and potential failure.

3. Mechanical Properties: The strength and durability of Stainless Steel 304 can provide robust and long-lasting connections, which is often a requirement in electrical installations.

4. Insulation: If the application involves electrical insulation, additional components like plastic or rubber washers may be needed alongside the stainless steel dome nuts.

5. Grounding: In grounding applications, the use of stainless steel may require additional consideration due to its lower electrical conductivity compared to materials like copper or brass.

6. High-Temperature Resistance: Stainless Steel 304 has good high-temperature resistance, making it suitable for electrical applications where heat may be generated.

7. Safety Regulations: Always check and comply with local and national electrical codes and standards to ensure that the dome nuts are suitable for the specific electrical application you have in mind.

8. Consult Experts: For specialised electrical applications, it is always best to consult with electrical engineers to ensure that the material and type of dome nut used are appropriate for the specific requirements.

What is the Tensile Yield Strength of Dome Nuts?

The tensile yield strength of dome nuts can vary depending on the material they are made from, the manufacturing process and the specific grade of the material. For Stainless Steel 304, the tensile yield strength is typically around 205 megapascals (MPa) or approximately 30,000 pounds per square inch (psi). This is the point at which the material will start to deform plastically and will not return to its original shape when the applied stress is removed.

It’s important to note that the yield strength is just one of several mechanical properties that might be relevant for your application. Other factors like tensile strength, hardness and impact resistance can also be important, depending on the specific use case.

For critical applications, it’s always best to consult with engineers and review the manufacturer’s data sheets for the specific dome nuts you are considering. This information will give you a more complete understanding of the mechanical properties and ensure that the dome nuts meet the requirements of your project.

How do Stainless Steel 304 Dome Nuts React to Acids and Alkalis?

Stainless Steel 304 dome nuts have good general corrosion resistance but are not completely immune to the effects of acids and alkalis. Here’s how they generally react to such environments:

1. Acids: Stainless Steel 304 is generally resistant to a wide range of acids at room temperature. However, its resistance falls when exposed to stronger acids like hydrochloric and sulfuric acids, particularly at higher concentrations and temperatures.

2. Alkalis: Stainless Steel 304 exhibits good resistance to alkaline solutions, but like with acids, this resistance can decrease at higher concentrations and temperatures.

3. Chlorides: One of the weaknesses of Stainless Steel 304 is its susceptibility to pitting and crevice corrosion in the presence of chlorides, commonly found in acids and saltwater.

4. Organic Acids: Stainless Steel 304 generally shows good resistance to organic acids at moderate temperatures and concentrations.

5. Special Considerations: While Stainless Steel 304 can resist many types of acids and alkalis, factors like temperature, concentration and exposure time can significantly affect its corrosion resistance.

6. Alternatives: For highly corrosive environments, especially those with high chloride concentrations, you may need to consider more corrosion-resistant grades like Stainless Steel 316.

Do Stainless Steel 304 Dome Nuts Resist UV Degradation?

Yes, Stainless Steel 304 dome nuts are highly resistant to UV degradation. Unlike plastics or some other metals that can break down under prolonged exposure to ultraviolet light, stainless steel remains largely unaffected. The chromium content in Stainless Steel 304 forms an oxide layer on the surface, providing excellent resistance to a wide range of environmental factors, including UV radiation. This makes Stainless Steel 304 dome nuts a good choice for outdoor applications where they will be exposed to sunlight for extended periods. However, while UV radiation won’t degrade the stainless steel itself, if the nuts are coated with any form of paint or other organic material for aesthetic or additional protective reasons, these coatings may be susceptible to UV degradation over time. Always check the specifications of any coatings or treatments if UV resistance is required.

What is the Fatigue Strength of Stainless Steel 304 Dome Nuts?

The fatigue strength of Stainless Steel 304 dome nuts is a measure of how well the material can withstand cyclic loading over time without failure. While the specific fatigue strength can vary depending on factors like manufacturing processes, surface finish and stress concentrations, Stainless Steel 304 generally offers good fatigue strength in comparison to many other materials.

Fatigue strength is typically less than the tensile strength and is influenced by repeated stress cycles. For Stainless Steel 304, the fatigue strength is often around 35-50% of its tensile strength depending on the specific conditions, such as stress concentration, temperature and corrosive environment.

It’s important to note that in applications where cyclic loading is a concern, such as in rotating machinery or oscillating components, the nuts should be appropriately sized and tightened to minimise stress concentrations that could lead to fatigue failure.

For critical applications where fatigue strength is a concern, it is highly advisable to consult with engineers and review the manufacturer’s data sheets for the specific properties of the dome nuts you are considering. You may also want to conduct fatigue tests under conditions that closely mimic the intended application to ensure that the material will meet your needs.

Check out our blogs discussing A2 stainless steel dome nuts. 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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