MEDIUM ![]() | ![]() | |
| Name | STEP | NX Part/Assembly File |
| File extension | .stp, .step | .prt |
| Original software | NX (Unigraphics) | |
| Binary | ■ | ■ |
| ASCII | ■ | |
| Polygonal | ■ | |
| NURBS | ■ | ■ |
| Solids | ■ | |
| Smoothing groups | ■ | ■ |
| Textures, materials | ■ | |
| Developer/Owner | ISO | Siemens |
| Description | ||
| Specification | Download PDF | |
| Format features | The basic format of the transfer surfaces between CAD-systems. See also IGES | |
| Viewing software | Delcam Exchange 2012 (free), eDrawings (free) | Delcam Exchange 2012 (free) |