In the world of automotive manufacturing and repair, exhaust bolting is a critical component. You may have noticed that unlike regular steel nuts, copper or copper-coated nuts are used in many exhaust systems.

The automotive exhaust system is a component that works continuously at high temperatures, high corrosion, and high vibration, and is prone to exhaust manifold nut rust, seizing, loosening of the nut due to thermal expansion and contraction, and corrosion of the bolted joints by acidic gases in the exhaust gas. Ordinary steel nuts are highly susceptible to oxidization, rusting, and seizing in such environments, and are even impossible to dismantle.

Copper Nuts are nuts made of pure copper or copper alloy materials, copper has good high temperature stability (can withstand 300°C~500°C), and is not easy to soften or deform in high temperature environments, and is suitable for exhaust manifolds, three-way catalytic converters, turbochargers, and other high-heat areas. Even when exposed to acidic gases, water vapor or salt for a long period of time, copper nutsare not susceptible to rusting, which helps to extend the life of the threaded connection.

Copper material has certain lubricity, which can prevent nuts and bolts from biting due to high temperature, making later disassembly easier and facilitating maintenance and replacement. To learn more about the use and purchase of copper nuts, please contact Jinxin or view product details.