Majid Fasteners, a reputable manufacturer and supplier based in Dubai, UAE, specializes in high-quality Copper Nickel Nuts that are engineered for outstanding performance in marine, offshore, and corrosion-heavy environments. Crafted from top-notch Cu-Ni alloys, these nuts boast remarkable resistance to seawater, bio-fouling, and stress-corrosion cracking. At Majid Fasteners, we adhere to strict quality standards and precision engineering practices to guarantee exceptional durability and mechanical strength. Our Copper Nickel Nuts are commonly utilized in shipbuilding, desalination plants, heat exchangers, and industrial cooling systems, providing reliable and long-lasting fastening solutions even in the toughest operating conditions.
Copper Nickel Nuts are usually made from Cu-Ni alloys like 90/10 (90% copper, 10% nickel) and 70/30 (70% copper, 30% nickel). To boost their mechanical strength and resistance to corrosion, they often include elements like iron and manganese. These nuts are known for their impressive ability to withstand seawater, erosion, and temperature changes. On the mechanical side, they provide good tensile strength, ductility, and toughness, making them dependable for high-stress marine applications. Additionally, Copper Nickel Nuts resist corrosion caused by chlorides, biofouling, and cavitation, ensuring they remain stable in tough environments.
| Copper Nickel | Ni | Pb | Cu | Fe | Mn | Zn |
| 9-11 max | 0.05 max | 88.6 min | 1.8 max | 1.0 max | 1 max |
Material | Specification | Standards | Size |
Cupro Nickel | ASTM | ASTM B151, B152 | M10 to M100 |
Copper Nickel Nuts find their place in various industries that demand outstanding resistance to seawater and harsh environments. They’re a go-to option in marine engineering, shipbuilding, and offshore structures because of their durability against saltwater corrosion and biofouling. Desalination plants utilize these nuts in pumps, pipelines, and heat-exchange systems that come into contact with brine. They’re also crucial in industrial cooling systems, oil and gas equipment, and power generation plants where they face high temperatures and corrosive fluids. Their reliability makes them ideal for naval applications, hydrodynamic systems, and coastal infrastructure projects.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.