Modular Synth Panels

Hello!

I am working on a panel that will have a few Alpha potentiometers 
involved.  (mouser part #31JN405)

The specification sheet shows that the diameter of the shaft is .25 
inches.  It also states that the threading is M7 x .75mm... whatever 
that means!  I have a similar potentiometer floating around, and I've 
noted that it doesn't fit into a .25 in hole.  The threading makes it 
wider than .25 in.  Unfortunatly, the specification sheet doesn't
show 
the total width for mounting.

Does anyone know that value off-hand?  I downloaded a few sample
front 
panels, and the closest thing I found was a hole that was 2.82 in.  I 
don't have my tape measure nearby, so I can't tell if that's in the 
ballpark or not.

Thanks!
- Bret