CATPart files are widely used in mechanical design workflows where engineers create, modify and manage exact 3D definitions of individual components: industrial equipment parts, enclosures, brackets, machine elements and other discrete components that later become part of a larger assembly.
In engineering software, CATPart commonly appears in CAD import pipelines, model review tools, digital mockup environments, geometry preparation workflows and data-conversion scenarios. A CATPart may be imported into CAE applications for simulation, or translated into formats such as
3D XML, STL, IGES or STEP depending on the intended use.