A STEP file is a standard format for showing 3D CAD models.
"The designer shall be aware that the STEP file is being released with the understanding that it has been created using nominal dimensions. It may be used as a design aide. The designer shall be fully aware that the dimensions and tolerances offered on the part data sheet should be observed and guide design considerations. Cornell Dubilier does not warrantee the use of the STEP drawing for the full design."