Würth Window Construction Screw FBS 4.1x25mm The Würth Window Construction Screw FBS is a high-quality screw designed for use in window construction. This screw features a raised countersunk head and is made from zinc-plated steel, providing excellent corrosion resistance. The PH2 drive ensures easy and secure installation. Ideal for various window assembly applications, this screw offers reliable performance and durability. Technical Specifications: – Type: Window construction screw – Size: 4.1 x 25 mm – Material: Zinc-plated steel – Head Type: Raised countersunk – Drive Type: PH2 – Corrosion Protection: Cr (VI)-free Key Features: – High corrosion resistance – Easy and secure installation – Suitable for various window assembly applications