Pull-Out Strength
This measures the force required to pull an anchor directly out of the wall material. It depends on the anchor's expansion mechanism and the material's density. Higher density materials provide greater resistance to pull-out forces.
Shear Strength
Shear strength represents the force needed to break the anchor when pressure is applied parallel to the wall surface. This is critical for objects that hang vertically or experience horizontal forces, such as shelves with weight distribution.