S3Dfree 2000 is the FREE unregistered version of Solid3D. Solid3D Fastener library is a productivity tool for AutoCAD allows you to create solid models of assorted Nuts, Bolts, Screws and Washers. The fastener is automatically created after selecting the desired properties, and clicking on the OK button. Standard fasteners may be created as 2D or 3D entities. With S3Dfree 2000 you will be limited to a small number of fasteners.