This bolt has sheared on my 1984 Fuego, 4 times now, thismorning on the way to work being its fourth. There seems to be quite a bit of force subjected to this little tapered bolt, and by the way it breaks, it almost looks like it is designed to shear. Maybe something in a strong steel would be better to mill in a lathe.
In my case, the reason for the constant shearing of this bolt, is most probably due to a worn clutch, needing to be excessively tightened.
The obvious solution is to have a new clutch put in.