A front pillar lower outer includes a bent portion, and a first region and a second region, and is a skeletal component for automobile that is assumed to receive a collision load along the extending direction of the first region. The outer is constituted by attaching a first member that is arranged on a first region side, and a second member that is arranged on a second region side. An attachment line of the both members is arranged in a predetermined zone between a first boundary and a second boundary. The plate thickness of the first member is larger than the plate thickness of the second member.