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STEP AP 242 also includes PMI ( product manufacturing information) such as GD&T, BOM, and other meta-notes & notes for building and measuring the part or assembly. More importantly, as companies move towards model-based definition and away from traditional paper-based workflows, STEP, specifically AP 242, has been the most popular file format for CAD interoperability downstream with departments, suppliers, subcontractors, and customers. Native CAD file formats from CAD software like CATIA and SolidWorks are proprietary and cannot directly be translated nor converted to another proprietary CAD system.īy exporting into a neutral CAD format like STEP, it allows for interoperability downstream. In this article we address AP 203, AP 214, and AP 242 pertaining to mechanical CAD design, 3D dimensional geometry, and product information. It is detailed into numerous Application Protocols (APs). STEP is an ISO-standard ( ISO 10303-242:2020) written using the EXPRESS modeling language.

STEP (Standard for the Exchange of Product Data) is a popular neutral 3D CAD file format that is interoperable among various CAD programs such as CATIA, Creo, SolidWorks, NX, Inventor, and others.