size of nuts, bolts and other things

[france320isco]

Hi jeroen.
Could you please confirm this size information:

chain tensioner (S52) 32mm hexagonal
crank pulley nut 36mm hexagonal
head bolts 12mm ( but torx socket or 12 point impact socket?)

I'm asking cause during my holidays i will take my head from the machinist for a general rebuilt (valves, guides, seats).
The bottom of the engine has been renewed on january.

best regards

[france320isco]

Hi jeroen.
Could you please confirm this size information:

chain tensioner (S52) 32mm hexagonal
crank pulley nut 36mm hexagonal
head bolts 12mm ( but torx socket or 12 point impact socket?)

I'm asking cause during my holidays i will take my head from the machinist for a general rebuilt (valves, guides, seats).
The bottom of the engine has been renewed on january.

best regards

Head bolts: 12mm, "12 point socket" in italy we call it "poligonali"