You can ask for the part file in the following formats:
3DPDF(.pdf), ACIS(.sat), AutoCAD(.dwg), CATIAV4(.model,.exp), CATIAV5(.CATPart,.CATProduct), IGES(.igs,.iges), JT(.jt), Parasolid(.x_t,.x_b), Pro/EngineerGranite(.g), SolidWorks(.sldprt,.sldasm), STEP(.step,.stp), STL(.stl), and Unigraphics(.prt).