The FEX series from SPAX offers a complete range of screws for the manufacture of windows: The window frame-drilling screw FEX-A is for fixing fittings to single-wall plastic profiles. The FEX-KS fitting screw is for fastening fittings to plastic profiles and the FEX fitting screw is for securing fittings in PVC and wooden profiles. The FEX-H is suitable for fastening fittings to wooden window frames. The self-drilling FEX-RS roller shutter screw is screwed into the frame profile. The FEX combi screw is used for plastic windows with steel reinforcement: the fine thread with drill point is intended for use in metal, while the coarse thread is intended for plastic. The FEX coupling screw is used to connect plastic profiles and thus enables PVC frame profiles to be connected to one another. So: SPAX has the right solution for every material and every job.