On my A64 kit it is completely falt to the board, as I trimmed the stand-offs completely off, but thats because I couldn't get any contact with the CPU as it doesn't have a heatspreader. I plan to use this on the DFI nF4 board I have and I don't think you can really damage the chip with this method as it does have a heatspreader and you will be able to feel the pressure when the head is making complete contact, just stop screwing it down at that point.