Screw hole library
thingiverse
If you need to do holes for the screws to you models, this library will help you. This library does not include modules to create screws itself but just holes for the screws. There are three OpenSCAD modules for different kind of screws in the library. There are examples how to use them in the library file. You can find printed examples from the stl file attached.
Download Model from thingiverse
With this file you will be able to print Screw hole library with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Screw hole library.