Patent ID: 8339746

Claim:
A head suspension having a base plate to be attached to a carriage arm and a load beam supported with the base plate and configured to apply load onto a magnetic head slider at a front end thereof, the head suspension comprising: the base plate having a flange and a boss; the flange having a first face attached to the carriage arm and a second face opposite to the first face attached to an auxiliary member, the boss fitted into a hole of the carriage arm and fixed thereto by plastic deformation when attaching the base plate to the carriage arm; a first-face contact circumferentially formed along an outer circumferential edge of the first face of the flange, so that the first-face contact among parts of the base plate except the boss is most proximal to the carriage arm; and a second-face contact circumferentially formed along an outer circumferential edge of the second face of the flange, so that the second-face contact protrudes toward the auxiliary member with respect to other parts on the second face of the base plate including the boss so as to be most proximal to the auxiliary member, thereby contacting the second-face contact to the auxiliary member to prevent the other parts on the second face from coming into contact with the auxiliary member.