
Consider a free-body diagram of the wood flange.
The net resultant force acting on the wood flange is 3,417.6 N. This force must be resisted by the bolt if the flange is to be in equilibrium.
Shear stresses are produced in the bolt. Shear stress in the bolt occurs on the plane between the plywood web and the wood flange, both on the near side of the flange...
...and on the far side of the flange.