The numbers in your post may be a bit confusing.You also need a M4 x 7mm long screw. I also use the fly more soft case strap as the lanyard.
The numbers that are somewhat critical for someone wanting to deal with the hole in the bottom of the sc are 4mm diameter with a .7mm pitch.
7mm length may not be quite long enough in some applications depending on what is being attached. As I remember(sold mine), I think the depth of the hole is around 12 to 14 mm.