Thanks for the replies.
It's 12 mm stretch bolts, I bought the bolts already.
There's a drawing of the 12 point bolt, top view, where the procedure for this specific torque is.
The instructions that came, list all the gasket reference numbers, and how to toque each one, is folded like a map, so long it is, and I noticed that for some gaskets # they have the xx ft lbs plus the angle torque, using the same kind of bolt, but not for this gasket...