An apparatus for securing the internal rotational components of a disk drive
utilizes
an annular clamp retention device. The clamp retention device has a rigid, metallic,
main ring body from which protrudes a plurality of compliant tabs having a generally
L-shaped cross-section. The compliant tabs extend radially inward from the body
to form an inner circular array of the tabs. In addition, a plurality of rigid
planar flanges, which are larger than the compliant tabs, extend radially outward
from the body. The compliant tabs are designed to engage the hub and cartridge
of the disk drive rotational components at the upper end of the disk stack.