Manual material handling using hand truck is limited to flat surfaces. Hand truck equipped with tri-star wheel mechanisms can overcome these problems. On this research is discussed about the design of the tri-star wheel mechanism on the stair-climbing hand truck. For the first step, Design aims to analyze stresses and factor of safety on the shaft that supports the frame and wheels. The shaft is designed through the selection of material and dimensions to determine the factor of safety according to the amount of loading given. The modeling results in the software are then analyzed using the FEA simulation method. The shaft component uses various material ASTM A41, AISI 304, and AL 6061 with diameters of 6 mm, 12 mm, and 18 mm. The shaft receives a load of 400 N. The simulation results show that the materials that can be used are ASTM A41 and AISI 304 with a diameter of 12 mm and 18 mm, while the AL 6061 material can only be used on a diameter of 18 mm
