Male terminal fitting and terminal fitting structure

A male terminal fitting, comprising:

• a tab portion to be connected to a female terminal fitting;
• and
• a supporting portion continuous with the tab portion along a connecting direction to the female terminal fitting,
• wherein:
• the tab portion extends along the connecting direction and includes a bottom wall portion, a first side wall portion continuously rising from one end part in a width direction intersecting the connecting direction, out of the bottom wall portion, a second side wall portion continuously rising from the other end part in the width direction, and an upper wall portion continuously extending from an upper end part of the first side wall portion toward an upper end part of the second side wall portion and overlapping the upper end part of the second side wall portion, and
• a first recess extending along the connecting direction and recessed downward is provided in a central part in the width direction in an upper surface of the upper wall portion.