Pentalobe Screws alternatives for MacBook Pro Unibody

I have a MacBook Pro Unibody mid 2012 15'' with several Pentalobe screws used to attach the Motherboard. Unfortunately, I lost some screws after replacing the Keyboard. While I still have most of them, and the Motherboard doesn't move, I was wondering if I could replace all Pentalobe Screws with some other screws. I first thought about ordering some extra Pentalobe Screws but I couldn't find a buyer for those specific screws online Do you know what kind of screws I need to replace the Pentalobe Screws ? Thank you so much for your help !