Hi! 

I made this rugged case to protect a 2.5" HDD. It's a two-part case, the top and the bottom.

 To close it, I recommend using M3 screws by 10mm. 

If you have a HDD that's a bit thin, like an SSD, you can use other screws on the side to hold it in place even better! 

There you go, I hope it works for you.