I've been in France a week and visited numerous hardware stores and agricultural stores, have not seen anything that is not some round metric size, be it bolts to water tanks, the only thing I saw that looked odd was a container of Tobasco sauce with 57 ml on the label, no other unit, everything on the label was in French.
One problem I ran into was finding a nut for a non metric thread, not possible so far and something American exporters need to realize, with the possible exception of the UK, the rest of Europe, Russia, the Antipodies and Africa will likely be the same. Ive not spent enough time in South America to see what's avialable there. When I did visit a hardware store in the UK last year, they had no inch size drill bits which is the exact opposite of availability in the US. Let me know if there is something you'd like checked out. Mike Payne
