Load/Unload Mechanism - Hitachi HTS548040M9AT00 Specifications

The recommended mounting screw depth is 3.0±0.3 mm for bottom and 3.5±0.5 mm for horizontal mounting.
The user is responsible for using the appropriate screws or equivalent mounting hardware to mount the drive
securely enough to prevent excessive motion or vibration of the drive at seek operation or spindle rotation.

6.4.5 Load/unload mechanism

The head load/unload mechanism is provided to protect the disk data during shipping, movement, or storage. Upon
power down, a head unload mechanism secures the heads at the unload position. See Section 6.5.4, "Nonoperating
shock" on page 32 for additional details.
Travelstar 5K80 Hard Disk Drive Specification
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