Connector with improved terminal locking device

A connector comprising:

• a terminal metal part mounted on an end of an electric wire;
• a housing housing the terminal metal part at a housing completion position inside the housing and to be inserted and fit into a counterpart fitting portion headed by a tip;
• a terminal locking member mounted on the housing from outside along a direction crossing an insertion direction of the housing to the counterpart fitting portion and locking the terminal metal part as the terminal metal part is at the housing completion position at a mounting completion position with respect to the housing;
• and
• a front holder causing the housing to be inserted headed by the tip and locking the terminal locking member at the mounting completion position
• wherein
• the housing has a fitting part housing the terminal metal part inside the fitting part and to be inserted and fit into the counterpart fitting portion having an inner circumferential wall face and a protruding part at the tip protruding toward the insertion direction side from an end face of the fitting part on the insertion direction side, housing the terminal metal part inside the protruding part, and mounted with the terminal locking member, and
• the front holder has a first tube part causing the fitting part to be inserted and a second tube part causing the protruding part to be inserted together with the terminal locking member.