This paper investigates the maximum wall shear stress value and its location as measured on a smooth flat plate impinged upon by a normal planar jet. and are found to be closely related to the stagnation pressure and the half-width of the mean wall pressure profile . The measurements were made by two different techniques: a Stanton probe and oil film interferometry. The maximum wall shear stress location is found to be independent of the jet Reynolds number. At a small nozzle-to-plate distance is related to the jet slot width as . At a large nozzle-to-plate distance , the maximum wall shear stress location is related to the mean wall pressure half-width as . A new Reynolds number, referred to as the stagnation Reynolds number, is defined as , where ρ is the fluid density and ν is the kinematic viscosity. The maximum wall shear stress is found to be strongly influenced by the stagnation Reynolds number, and the dependence as measured by Stanton probes is approximated by a power law of . The solution of the laminar flow equations in the Appendix gives an alternate relation for , which is in better agreement with the oil film interferometry measurements. Dimensional analysis is performed to gain insight into the empirical findings.