Are you talking about the screws that hold the servo arms onto the servo output splines? If so, I believe those are M3 thread, about 5mm, maybe 4mm long. But no, every super combo that I have gotten has had them in the kit.
The manual says they are m2 x 4mm - to attach the D4AF servo horn.
The only other screws that have that kind of thread are the ones that mount the servos themselves - just to check I didn't put a screw (or three) in the wrong place I backed all of them out and they are too long.
I'll probably drop by the hobby shop I got the kit from to see if they have any spares .