55XD8577 fixing screws

[simonpunch1]

Hi,

I've recently bought a Bravia 55XD8577 and want to wall mount it, I've bought a wall mount with all the relevant fixings but can't find anywhere which screws I use to mount the brackets into the back of the TV itself. There doesn't appear to be any screws in the box apart from the ones that fit it to the base which I have been using since purchase. I'm guessing either M5 or M6 but not sure which and the instructions only indicate using two screws?

Any advice gladly accepted.

Thanks