I'm designing some bolster plates for a project and I need to finish detailing the prints for the vendor to start building them. I have two 16mm diameter dowel pins that are to be press fit into the bolster plate to act as alignment pins into my work piece. the hole tolerance on the bore in the work poece is [16mm H7] so we are having a stainless 16mm dowel press fit into the bolster. My ? is this. What tolerance is correct for the interference fit of the pin and the bolster plate? I'm drafting these in Solidworks and I want to be sure they are dimensioned correctly. I dont fully understand the H7 vs h7? or the other alpha/numeric tolerances for that matter. I havent used GD&T since college and that was almost 15 years ago. I need a little refresher please!