Torx size for Case Trapperlock?

[NativeCraft]

I realize that the Trapperlock isn't officially "traditional" because it has a thumb stud and a pocket clip, but no one has yet responded to my request in the General Forum.
Does anyone know what Torx size fits the thumb stud nut on the Case Trapperlock?

 

[afishhunter]

No idea. I didn't even know it has Torx

 

[gotgoat]

a t5