The ones on my LMII are metric. Phillips head M4 (dia) X 10mm long. I measured mine with a digital micrometer.
It also uses a lock washer.
I buy metric machine screws at my local ACE hardware store. Any local hardware store will have them. Nothing special.
We must go forward, not backward. Upward, not forward. And always twirling, twirling, twirling towards freedom.