[jdiwnab]

We use both. Most of the bolts we use are all 5/8", but I have to reach for the metric wrenches/alan wrenches/magic wand, too much to say one way or another. We like to use english in general stuff, like framing, because the max dimentions is in inches. I would rather use english have it the right size than make a mistake and be too tall and not be able to do anything about it. If everything was in metric, I am sure that we would use more metric, but it's not. (and as a side note, we use 5/8" bolts because we have a huge bag of them, but it is currently running low, so we might get a different size bolt for the future)