For the ongoing energy transition, high pressure hydrogen is a highly relevant energy carrier. In order to provide a practical and robust hydrogen infrastructure, a vast variety of components needs to be developed to ensure a save hydrogen storage and transport. Dimensioning of these parts with respect to their structural durability requires new dimensioning schemes and guidelines to be developed which account for material specific damage mechanisms under hydrogen environment. An ideal basis represents the well-established FKM guideline issued by the German Research Association Mechanical Engineering (FKM). The guideline is applicable for a wide range of mechanical engineering components and is particularly popular for small and medium enterprises (SME). Within our ongoing project, the dimensioning scheme based on FKM guideline is applied for exemplary structural parts in hydrogen environment. Based on literature data and experiments conducted within the project, a dimensioning scheme is developed specifically for a sample component. In our presentation, we analyze existing dimensioning codes and material data under hydrogen environment and discuss how the FKM approach needs to be adapted to consider the hydrogen effects on material and component strength.