H100i broken screws

I recently got my H100 RMAd due to a grinding noise from the pump and the replacement got here today. When installing it (exactly the same way as I installed the old one) one of the standoffs snapped, then when removing the other screws to inspect the damage another one snapped and the heads are now stuck in the thumbscrews. Is it possible to buy the screws separately as I need the use of my computer and can't afford to send it back or wait more than a few days.



Thanks :)