An M8 nut is a threaded fastener used to secure bolts or screws with a thread diameter of 8 millimeters. They are commonly employed in construction, mechanical assemblies, and various industrial applications due to their reliability and strong grip. M8 nuts are available in different materials, such as stainless steel, brass, and galvanized steel, making them suitable for various environments and load types. Choosing the correct M8 nut is crucial for the strength and durability of the connection, ensuring it can withstand vibrations and movements without loosening.