This metric screw fit/tolerance guide features holes for M3-M6 screws (3.00mm-6.00mm) with clearance to interference fits, designed to help you find the right dimensions for screw holes in CAD.

Finding the right hole size for a screw is difficult without testing first - in the best case you're looking for self-tapping holes with a fit tight enough so that the screw can live up to its highest potential, but without significant warping to the 3D-printed material. With this guide it's made easy for a variety of screws you might have on hand.