An apparatus restricting motion of an actuator assembly to preclude damage to
a read/write head or a disc of a disc drive, the apparatus includes a pole piece
with a crash stop mounting aperture and an overmolded crash stop communicating
with the crash stop mounting aperture. The overmolded crash stop includes a retention
channel formed by a top retention portion, a bottom retention portion and a main
body portion during a process of molding the overmolded crash stop to the pole
piece. The main body portion conforms to the crash stop mounting aperture, thereby
precluding motion of the overmolded crash stop relative to the pole piece in a
lateral direction, while the top retention portion and the bottom retention portion
constrain motion of the overmolded crash stop relative to the pole piece in the
vertical direction.