A spring nut is a type of fastener with a circular body and internal threads that allow it to be tightened onto a bolt or screw. It has a spring-like feature that allows the nut to compress or expand, allowing it to securely fasten components together even when there are slight discrepancies in the size or spacing of the holes. Spring nuts are commonly used in a variety of applications, including construction, automotive, and mechanical engineering, and they are available in a range of sizes, materials, and finishes to suit different requirements. They are often used in applications where the components being fastened may be subject to movement or shifting, such as in the suspension of a vehicle or the support structure of a building. Spring nuts are easy to install and remove, and the spring feature helps to provide a secure and reliable connection.