H105 spare screws, websites are wrong? Where do I find them?

I bought a pack of screws to replace a missing one on my relatively new (month) H105. I bought them from the UK Corsair Site.

These are the ones I bought.



The small ones are too long and the head isn't as wide though, so they don't match the H105s. These are the only ones on the website :( so I'm confused which do I need? Where do I find them?