[wiredgeorge]

Can't recall what size screws are used; M6 (6mm sounds about right. There are four threaded holes on the back of your TV; they use threaded brass inserts. There are several offsets that are common and TV stands are made to accommodate those within the weight holding range for the TV stand. That is why in your picture, the uprights with the slots are held on by 2 screws. You can adjust for the different offsets. You will also want to use some large washers (fender washer type) between screw head and slotted bracket to avoid the possibility of the TV coming out of the brackets. For some reason, I am thinking 5mm but you can buy both M6 and M5 screws to hold the TV.