I am wondering why the material thickness is not factored into calculating bolt shear strength in a joint. I know that it is used when calculating the strength of the material itself and its susceptibility to deformation and tear out but why not the bolt? When you cut a piece of cheese you use a knife because of its small surface area and large force so would a thinner and stronger material cause a bolt to shear at a lower pressure? Does it have something to do with the elasticity of the material and the materials ability to actually increase surface area contact with a thicker material? Thank you!