Abstract: A modular power drive assembly includes a plain carbon driving shaft having an externally splined connection end, and a cast iron yoke having a hub thereon in fixed engagement with said connected end of the shaft. In a preferred form, the hub includes an internally splined mating portion for fixed torsional securement to the externally splined connection end of the shaft. The splined portions are sized to be press-fitted together to provide an interference fit between the splined members. A bonding adhesive is applied between the mating splined portions, and the yoke and shaft members are thereby fixedly secured against axial and rotational movement with respect to one another.