A connector comprises a housing body including terminal receiving chambers and terminal locking lances for locking tcrminals received in the terminals receiving chambers; and an outer part including a front part which covers an end side of the housing body in a longitudinal direction of the terminal and has mating terminal inserting holes communicating with the terminal receiving chambers and a spacer part which is mounted into the housing body from a mounting direction crossing at right angles the longitudinal direction of the terminal and is locked into the housing body at both of a provisional locking position for allowing the terminals to be inserted into the terminal receiving chambers and a full locking position for locking the terminals and preventing the terminals from coming out from the terminal receiving chambers, wherein the front part and the spacer part are formed in one piece.