Abstract: A stack formed by stacking a plurality of blanked members includes a first blanked member forming an outermost layer of the stack and a second blanked member located adjacent to the first blanked member. A through is hole formed in the first blanked member, and an area of the through hole has a length that is greater than a width. A connecting tab having a chevron shape is formed in the second blanked member so as to be fitted into the through hole of the first blanked member. On opposite sides of the through hole, notches are recessed outward from an inner-wall surface of the through hole in opposing directions that correspond to the width of the area of the through hole.