Everything on this bike is Metric. If you purchase a random set from any hardware or automotive store, you'll be able to find a bolt that works. They come is little cases, like this:
This is going to be the easiest way to solve your random bolt dilemma.
If you REALLY want factory bolts, then I suggest you check out
www.ronayers.com
Look through their microfiche for your bike and it will give you specific part numbers and the ability to order individual things, like bolts.
But, honestly, I would just spend $20 on a complete set of assorted nuts and bolts and solve your problem that way
