They go way farther than that. I used to use a 300 mesh count polyester at the metal fabricators I used to work at long ago. You can control the thickness by changing the softness of the squeegee, blade angle, and sharpness of the edge. A rounded edge will put more ink through the screen for instance as well as a steeper squeegee angle. Experiment.
Also you are not limited to a single coat. Multiple layers build up well.