A clamp is provided, having a slide rail, a fixed arm fastened to the slide rail and on which a first abutment surface for a workpiece is arranged, a sliding arm displaceable on the slide rail, and a housing arrangement, on which are held a first bearing device and a second bearing device, by means of which the housing arrangement is guided on the slide rail. The sliding arm is positioned between the first and second bearing devices. A second abutment surface for a workpiece is arranged on the housing arrangement and faces the first abutment surface. A force application device is held on the sliding arm and acts on a pressure piece held on the housing arrangement. The housing arrangement has a first housing part with a housing interior having an opening. The sliding arm is brought into the housing interior through the opening during production of the clamp.