What is the file extension for a SolidWorks part file?

The file extension for a SolidWorks part file is .sldprt. This extension specifically indicates that the file contains a 3D model of a part created in SolidWorks. Understanding file extensions is important because they define the type of file and the application that can open it.

In SolidWorks, the .sldprt file format is used for individual part files, which can include geometry, features, and various properties associated with the part. This allows users to create and manipulate 3D models effectively within the SolidWorks software.

The other options represent different types of files associated with SolidWorks. For instance, .sldasm is the extension for assembly files, which combine multiple part files into a single assembly structure. .slddoc is a general extension used for documents created in SolidWorks but is not specific to parts or assemblies. The .sldprt1 extension is not a standard SolidWorks file format, and it could potentially lead to confusion as it suggests a version or iteration that doesn't correspond to typical usage. Therefore, .sldprt is clearly the correct and recognized format for part files in SolidWorks.