A .SLDPRT file is a 3D part file created by SolidWorks, a popular CAD (Computer-Aided Design) software used for designing and engineering mechanical parts and assemblies. It contains the geometric information, features, and properties of a single part, such as its shape, dimensions, materials, and manufacturing information. These files are essential for creating complex mechanical designs, as they allow engineers to model individual components and then assemble them into larger systems. The .SLDPRT format is proprietary to SolidWorks, but it can be exported to other common CAD formats for compatibility with other software. The data within a .SLDPRT file is typically stored in a binary format, making it difficult to directly edit or view without specialized software. The files can contain parametric features, meaning that changes to one feature can automatically update related features, enabling efficient design modifications. They are used extensively in industries such as automotive, aerospace, and manufacturing for product design and development.