noooo....use a little locktight on the threads.its only wrist tight.do not use the full lever value of the handle of the wrench.go too tight,youl be back with some more questions

Snap. Yep that was to tight.
The second question is how much work does it take to fix a snapped off set of threads. It has been done and you don't want to know.
Also Harbor freight has basic 1/4 drive torque wrenches. Some may argue that they aren't calibrated right but 0-10 pounds is just fine.
I just torqued some head bolts on a Jeep with the 1/2 inch Harbor freight torque wrench. Then I went to use it on the valve cover gasket. 140 pounds to 8. Watched my buddy snap the bolt off. So I grabbed the wrench and did the same. Totally not accurate less than ? pounds.