The development of the smallSats industry and the novel variety of on-boards instruments lead more and more to a miniaturisation of the space mechanisms. In addition to the smaller size, the reduction of the cost and the time to the market became primary objectives for recurring components used in space systems. With this variety of new applications, stepper motors are also more widely used as they bring key features such as powered and unpowered holding torque as well as accurate positioning using step count and open-loop control drastically reducing system complexity and costs. After a thorough review of stepper motors compatible for space applications, an important lack of product availability was found in the small size range, especially on the European market. Therefore, throughout its harmonisation dossier, European Space Agency (ESA) would like to increase the family of available stepper motors compatible with space environment.