I have a PING I25 diver I use for sampling shafts. I was trying a new shaft and it became loose. I used the torque wrench to tighten it and the screw head snapped. There was never a “click” and the tension release.  I put in another screw and it also snapped the head off. Again, never a “click” and tension release.  I don’t know what is wrong.

I have a G425. Maybe I am using the wrong torque wrench? Are there different torque wrenches for the different PING models?  Is it the adapter? Did I just have bad screws?  All of the parts are OEM. What could be the root cause of this?

Thank you.