Can anyone confirm the dimesions of the shock mounting hardware on my 2009 Trek Fuel ex9?

I think I need the 8MM with mounting width of 1.8" (45.72mm) which is given in places as part number 803-03-046.

I know the logical answer is go the my LBS but that involves more time and I have everything I need to do a DU bushing replacement and hardware change myself (except new mounting hardware).