Transducer suspension system having bosses with different inner diameters, and equal outer diameters

To attach a suspension assembly to the actuator, the suspension is connected to a mount plate. The inner diameter of the swaging boss in this mount plate differs depending upon if it is on a lower or upper suspension of an actuator arm. After setting only the mount plates with bosses of a larger inner diameter and performing the first swage, the mount plates of the smaller inner diameter are set and a second swage is performed in a different direction. Even when performing this bidirectional swage, a boss caulked with the first swage is subjected to no deformation after a later swage and therefore a stable swage is possible.