A connector comprising: a terminal metal part mounted on an end of an electric wire (We); 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 into which the housing is configured 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 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 (21b, 21c) 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, wherein the fitting part houses the terminal metal part inside the fitting part, and the front holder has a first tube part into which the fitting part is configured to be inserted characterized in that the front holder has a second tube part into which the protruding part is configured to be inserted together with the terminal locking member at the mounting completion position, where the second tube part covers the terminal locking member from the direction crossing the insertion direction of the housing to the counterpart fitting portion. a terminal metal part mounted on an end of an electric wire (We); 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 into which the housing is configured 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 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 (21b, 21c) 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, wherein the fitting part houses the terminal metal part inside the fitting part, and the front holder has a first tube part into which the fitting part is configured to be inserted characterized in that the front holder has a second tube part into which the protruding part is configured to be inserted together with the terminal locking member at the mounting completion position, where the second tube part covers the terminal locking member from the direction crossing the insertion direction of the housing to the counterpart fitting portion.