this metric screw generator will do the trick for screws between M2 and M16 with matching nuts and washers. Fastener hardware is pretty accessible, but one never knows when a 3D printed piece will ...

the best size for joining 3/4-in.-thick material. Corrosion-resistant exterior screws, washer head screws for joining particleboard, and hi-lo thread screws for softwood are also available.