I had bought a used Cal 9.2, with a cast iron keel. Several months after having it delivered, a couple of the keel bolts weeped a little. So in my infinite wisdom, I applied a torque wrench only to find one the bolts to spin and not get tighter. The other ones tightened with only a partial turn. I was horrified that the threads had stripped in the cast iron and it would have to be pulled out. I proceeded to only make things worse and ended up pulling the boat. Searching the INTERNET, the Cal has side pockets for the stud ends to be topped, er bottomed off with a washer and nut, just like in the bilge. The studs were solid rod with the ends threaded. The studs were pristine in condition (fresh water boat) steel studs and iron keel, little potential difference. For more on this project check out the link below...
keelbolts