Using 3ds joystick for custom controller

Hello first of all I'm new to this forum so I hope I'm not doing anything wrong. I'm currently working on making a super portable controller that I can take with me said that I'm going to use 3ds joysticks since they're so low profile. I will be 3d printing the vas e it I know nothing about screws so to my question.

What kind of screws does the 3ds use to hold it's joystick in place? Or how can I secure the joystick in place?

Sorry for the long post and the small question and hope someone can help me.