Measures of Ludwig screws for the P83 butt plate

[Blue Note]

I'm looking for screws wich fit in the thread holes of the Ludwig P83 butt plate wich serves to fix the snare cords.
Does someone know the measures (length, diameter) and the type of thread?
Where can I find them? Online shops? They are difficult to find in Europe.

[Yarema]

They are 1/2 inch long slotted Pan Head screws. The size is #6-32. (32 threads per inch)