A wrench width adapter for a component that is screwable into a threaded opening is provided, including a base body having a continuous inner recess, extending along a longitudinal axis, for receiving the screw-in component. An inner wall of the base body that delimits the inner recess, in a cross-sectional plane perpendicular to the longitudinal axis, has, at least in part, the shape of a regular polygon corresponding to a first wrench width dimension, and an outer wall of the base body has, at least in part, the shape of a regular polygon corresponding to a second wrench width dimension that is greater than the first wrench width dimension.