Format reference

STEP Format Hub

STEP (.step, .stp) files represent CAD product data in ISO 10303 exchange syntax, supporting part geometry, assemblies, and manufacturing handoff. Use sample STEP files to validate CAD importers, assembly exchange, and product-data interoperability across engineering tools.

3 Files
135 Downloads (30d)
model/step
Related Formats in Three-d

STEP Related Formats

Format Strategy Links

STEP Format Guides

Open STEP FAQ
Implementation Notes

STEP Implementation Notes

Use the manifest endpoint for deterministic fixture selection in CI, then validate MIME/type detection against actual parser output.

If this format appears in multiple categories, prefer category-specific hub pages to keep test assumptions aligned with real usage.