Forgefix wood screw slotted round head st black japanned forgefix rh16bj these forgefix traditional slotted round head wood screws have a black japanned finish and are used in many decorative and ironmongery applications used for fastening many ironmongery products such as tee hinges and antique furniture japanned is most often a heavy black lacquer almost like an enamel paint ironware is often japanned black for decorative purposes it can also be used to render fixings rust proof with