Wikimedia Commons has media related to CAD file formats.

Other formats possibly not yet written:

• STEP - international standard for product data exchange (ISO_10303)
• G - BRL-CAD standard solid modeling open format including support for primitives, attributes, and arbitrary data storage

See also:

• Computer-aided design
• CAD data exchange
• Comparison of CAD, CAM and CAE file viewers
• Electronic design automation