Damper device

A damper device comprising:

• a first rotating body configured to rotate around a rotation shaft and receive power transmitted from a flywheel;
• a second rotating body including at least 1) a first plate configured to receive the power transmitted from the first rotating body at a radially outward portion of the first plate and 2) a second plate disposed to face the first plate and configured to rotate integrally with the first plate around the rotation shaft;
• a third rotating body configured to rotate relative to the second rotating body around the rotation shaft;
• a fastening body configured to integrate the first plate and the second plate at a position radially spaced apart from the radially outward portion of the first plate, the fastening body being separate from the first plate;
• and
• an elastic mechanism configured to elastically interconnect the second rotating body and the third rotating body in a rotation direction, wherein
• the first plate, including the radially outward portion and a restricting portion that restricts relative rotation of the third rotating body beyond a predetermined torsion angle, is a single piece.