As it often happens, I answered my own question. Hitachi has the standard and metric dimensions and I ended up getting something 10.3mm. I wish I would have stuck with the 9.5mm as the axle is no where near 10mm. It should work just fine regardless.
Danno, I'm attaching it to my rack. I'm coppying a design by some sweedish guy... http://www.andersj.se/projekt_startsida.htm I'm loosely basing it off this idea.
Scott