1. The problem statement, all variables and given/known data Hi there. I have to do this excercise for my exam and I am kinda lost with the verification of data, more precisely calculations. Can you guys help me out? I set 100N load right above the hole... the distance between centers of the hole and nut is 190mm. the max distance between the jaws is 55mm and the min distance is 30mm. The nut is a little bit smaller it is 29.5mm. I would like to calculate either the max stress or maybe easiest would be the deflection at the end? (from fem analysis it was ~0.25mm) 2. Relevant equations Simple beam calculations (Mechanics of material, FEA) 3. The attempt at a solution I am not sure about one thing. The wrench head. Use a single beam theory on entire wrench or split it to sections (if so how?) and calculate it with method of superposition.