Seat bolt is a 6(mm)x20(mm)
If I am looking for bolt sizes usually I go to
www.hdlparts.com and check the parts fiche there. It will give you diameter and length on the parts list below the picture, the only question becomes pitch. I have found that with the metric bolts, Honda
usually follows a standard pitch. For a 6 mm that is usually 1.0.
The hardware store usually will have a pitch gauge, of course that doesn't help if you don't have the original bolt. I have found ACE Hardware to be the best with selection of metric fasteners.
