A hard disk drive comprising balance weight integrally coupled to a clamp is provided. The hard disk drive comprises a disk stack assembly comprising a disk, a spindle motor comprising a rotational shaft and a spindle motor hub adapted to support the disk, and a clamp comprising a plurality of installation holes. The hard disk drive further comprises at least one clamp screw and a balance weight integrally coupled to the clamp and adapted to compensate for an imbalance in the disk stack assembly.

 
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> Thin film magnetic head

> Tape head having a support plate with contoured surface

~ 00565