I was also looking for the main hinge case screws for the SVF152
Looking at the screws listed, the size format M#*# refers to the diameter and lenght of the screw.
A-1946-097-A Screw M2*8-i(ni)(nylock)iron
- A-1958-291-A Q Special Appear M2x7(ni)(nyl)
These seem to be the longer screws, with the longest being M2*8 ofcourse.
I bought a mix bag of laptop screws and judging from those, M2 seems a bit small.
A longer M3 screw, isn't on the list but this would be a better bet.
I would try searching on just the discription element for an alternative source.