A forged product is made of a magnesium alloy and includes a through hole
making portion to make a through hole that runs in a predetermined
direction, and a bottom portion that lies on a plane intersecting with
the predetermined direction. The through hole includes a first portion
that has been formed by a forging process and a second portion that has
been formed after the forging process. The second portion of the through
hole has shifted toward the bottom portion with respect to the middle of
the through hole in the predetermined direction.