M12 Screw & Nut

thingiverse

This is a basic exercise for creating a versatile general-purpose screw and nut. The screw is created with five distinct modules, while the nut is made up of three separate modules. The goal is to provide users with flexibility to modify the length of the screw and the thickness of the nut according to their specific application needs. By using different modules, the STL file for each module will be smaller in size and less complex, allowing users to add them to their drawings without overloading their 3D drawing programs during import. The screw thread is not designed as a conventional screw. The thread is positioned at a 45-degree angle relative to the horizontal axis. Additionally, the depth of the thread is one-tenth of the diameter of the screw. This unique 45-degree thread design ensures that every 3D printer can print the screw thread without requiring any support structures. Although some screw designs feature threads at 60 degrees or 30 degrees relative to the horizontal axis and claim to require no supports during printing, actual printing often reveals issues with these designs. The size of the screws in these module files is M12, which corresponds to a screw with an outside diameter of 12 mm. The nuts have a slightly larger diameter of 12.6 mm, providing ample space for the screw to turn smoothly without excessive friction. Certainly, users can easily resize the STL modules within any 3D drawing program to fit their designed parts. With these screw and nut module designs, other users should be able to apply screws and nuts more efficiently without expending significant time or effort to build them from scratch.