Using different brackets the C760 lamphouse can fit several Omega enlargers. Most have no other model number on them. The only thumb screw I can see in the manual looks like this:
That is for a B66 or B22 enlarger. Which is one I don't have, at least I don't think so. If that's the one let us know, maybe someone will have one.
Most likely many of the other screws are the same thread. The instructions also mention a black tab bushing.