Forgefix wood screw slotted raised head st solid brass forgefix rah18br these forgefix traditional slotted twin thread wood screws have countersunk heads and can be used in many internal and external applications they have a solid brass construction to avoid corrosion used for both decorative applications and in applications where the screw may come in to contact with the elements avoiding corrosion can be used with all manner of wall plugs slotted screw driver required with slotted scr