W541 Heat Sink Screws

[NinjaB0T]

Hello,

I ve recently bought a W541 on ebay and after disassembling it to clean and repaste I found two stripped screws on the heat sink. I was able to unscrew them with the help of some pliers and remove the heat sink. Now I want to replace those two stripped screws but I cant find the specific screws anywhere and the Hardware Manual for the W541 doesnt seem to mention these screws at all. They are captive screws type with a plastic retaining clip. I managed to remove the plastic piece very carefully and the screws and springs came loose. Now I need replacement. Has anyone done this before?

I ve searched online and cant seem to find any info on the screws necessary. Most pages that sell screws like these dont specify being for this model or the size so Im a little bit cautious.
Kind regards.