These Forgefix single-threaded decking screws have Pozidriv heads and are specially designed, hardened and green-treated. The design of the screw helps prevent splitting the boards, and allowing them to expand and contract with the changing seasons. * Used in decking applications but also suitable for exterior timber and fencing applications * The 1,000 hour green treated finish offers excellent corrosion resistance to ACQ (Alkaline Copper Quaternary) treated timber used in construction and decking * Pozidriv screw can easily be distinguished by a line embossed in the screw head at 45° to the slots for the driver https://elecena.pl/product/27232529/forgefix-ds4560t-decking-screw-pz-st-green-anti-corrosion-4-5-x-60mm-tub-1000 2024-11-11 https://elecena.pl/product/27232529/forgefix-ds4560t-decking-screw-pz-st-green-anti-corrosion-4-5-x-60mm-tub-1000 2025-03-13