Northcore grub screws * 6 Screws per pack * FCS standard compatible * Robust stainless steel * Colour: Silver The new Northcore Replacement FCS Grub Screws are stainless steel replacement surfboard fin screws for standard FCS fittings. It has a robust and hard wearing construction compatible with most FCS fittings. They can be used to replace the original if it is lost or damaged. This grub screw set comes in a pack of 6 in silver colourway.