Contact Device, Contact System and Method For Assembling Such A Contact System

A contact device includes a housing having a housing interior, a screw having a screw head and a shaft connected to the screw head, the shaft extending along a screw axis and having a first thread, a screw locking device connecting the screw head to the housing by a force-based and/or an interlocking engagement, and a first contact element for contacting a second contact element of a further contact device. The first contact element and the screw are arranged in the housing interior.