A connector including a housing arranged to support an information transmission member, a forward portion in a mating direction of which is arranged to be inserted into a mating component to mate with the mating component when the connector is mated with the mating component, wherein the housing includes: a main body which is arranged to support the information transmission member and comprises said forward portion in the mating direction which is arranged to be inserted into the mating component; a lock arm, a rear end of which is fixed more rearward in the mating direction than the portion to be inserted into the mating component, extends in a cantilever form in the mating direction up to a position where the lock arm is to be inserted into the mating component, and includes a locking projection rising up in an outward direction and arranged to lock to the mating component; and a lock release operation arm which extends from a front end of the lock arm in an opposite direction to the outward direction, the outward direction being substantially perpendicular to the mating direction, and the lock release operation arm further extends along the lock arm and apart from the lock arm in a rearward direction with respect to the mating direction to a position where the lock release operation arm projects from the main body, and is arranged to be pulled in the rearward direction to deflect the lock arm in the opposite direction so as to release locking by the locking projection to the mating component, and wherein the main body includes an inner wall surface which forms a gap which allows the lock release operation arm to pass through therein while containing the lock release operation arm therebetween, and facing the lock arm; and the main body and the lock arm are integrally molded; characterized in that the lock release operation arm is integrally molded with the main body and the lock arm; and when the lock release operation arm is pulled by a strength exceeding a predetermined strength in the rearward direction with respect to the mating direction to deflect the lock arm, the inner wall surface serves as a stopper for receiving abutment of a forward portion in the mating direction of the lock release operation arm. a main body which is arranged to support the information transmission member and comprises said forward portion in the mating direction which is arranged to be inserted into the mating component; a lock arm, a rear end of which is fixed more rearward in the mating direction than the portion to be inserted into the mating component, extends in a cantilever form in the mating direction up to a position where the lock arm is to be inserted into the mating component, and includes a locking projection rising up in an outward direction and arranged to lock to the mating component; and a lock release operation arm which extends from a front end of the lock arm in an opposite direction to the outward direction, the outward direction being substantially perpendicular to the mating direction, and the lock release operation arm further extends along the lock arm and apart from the lock arm in a rearward direction with respect to the mating direction to a position where the lock release operation arm projects from the main body, and is arranged to be pulled in the rearward direction to deflect the lock arm in the opposite direction so as to release locking by the locking projection to the mating component, and wherein the main body includes an inner wall surface which forms a gap which allows the lock release operation arm to pass through therein while containing the lock release operation arm therebetween, and facing the lock arm; and the main body and the lock arm are integrally molded; characterized in that the lock release operation arm is integrally molded with the main body and the lock arm; and when the lock release operation arm is pulled by a strength exceeding a predetermined strength in the rearward direction with respect to the mating direction to deflect the lock arm, the inner wall surface serves as a stopper for receiving abutment of a forward portion in the mating direction of the lock release operation arm.