Abstract: The present invention relates to an arrangement for a locking mechanism comprising a lock bolt spring-assisted in the intended direction of locking, which is contained inside a lock casing connected to a plate capable of attachment along the side of a door. An actuating arm projects laterally form said lock bolt and capable of actuation by means of a handle connection extending through a door of the intended kind and a handle projecting on either side of the door. A pivoting follower acts between said handle and actuating arm for the purpose of actuating the actuating arm and the lock bolt. The arrangement has a lock component capable of being caused to move in a linear direction arranged in such a way as to be capable of displacement by means of a pivotally mounted lock component carrier.