In this thesis is considered the application of the optimization process, primarily in terms of minimum mass when modeling forklift fork. A selected fork which is attached to the bracket on the principle of a hook. Of the several available software packages that allow to solve optimization problems, here was used Creo Parametric 3.0. The first part of the thesis describes the method of application of the fork in forklifts and the importance of forklifts and their various applications. Some of the dimensions such as fork cross section width and height and the radius of curvature are not standardized, so when modeling, these dimensions were choosed that do not change the imaginary appearance and meaning of the fork, as shown in the second part. A fork model was created in Creo Parametric 3.0 software package and a fork stress analysis was performed for safety and to determinate if the fork can be used at a given load. Graphical results of stress analysis are presented where it was shown that it is necessary to redesigne the fork because such a current does not meet the specified operating conditions. In the third part of the thesis, general methods of optimization are listed and optimization with Creo Parametric 3.0 software packages is performed. The optimization criterion was the minimum mass, and after the adopted optimal values of the parameters, rounded to the nearest value, a new stress analysis was performed.