Where can i get a trem pivot screw thingy from? (see pics)

[larry_emder]

This pivot screw on my parker p-40 has been broken for a while now....and i really wanna get this guitar back up and running....this is the treble side screw fyi

whats the actual name for this screw?....

and where can i get one from????

The Bridge is a Wilkinson i believe, with fishman piezo saddles.

thanks HEAPS if you can help