An injection molded plastic chain module for a modular conveyor chain , comprising a substantially elongate conveying body defining a supporting surface for supporting products to be transported on said conveying body , and a hinge structure for hingedly connecting the plastic chain module with other modules , wherein the hinge structure is located at a lower side of the plastic chain module , wherein the hinge structure comprises a first hinge structure portion , preferably a hinge structure rear portion located at the trailing side of the module , which first hinge structure portion defines a first hinge pin receiving space for receiving a hinge pin , wherein the hinge structure further comprises a second hinge structure portion and a third hinge structure portion , preferably two hinge structure front portions located at the leading side of the module , wherein said second and third hinge structure portions define a second hinge pin receiving space and a third hinge pin receiving space , respectively, wherein said second and third hinge structure portions are interspaced to receive a first hinge structure portion , preferably a hinge structure rear portion , of a consecutive chain module there between, wherein the substantially elongate conveying body comprises a central portion , wherein the substantially elongate conveying body further comprises two wing shaped portions substantially extending away from said central portion in a respective lateral direction (LD21, LD22), wherein bottom sides of said wing shaped portions are arranged to be supported by a guide track , wherein each of both wing shaped portions comprises a respective top plate portion defining a part of the supporting surface for supporting products to be transported, each of said top plate portions having a thickness (T26, T27) being less than 1/3 of the thickness (T21, T22) of the respective wing shaped portion , and in that each wing shaped portion further comprises one or more supporting wall portions for supporting the respective top plate portion , wherein the supporting wall portions extend substantially downwards (D4) from the respective top plate portion , characterized in that the first hinge pin receiving space is at least partly defined by a relatively thin wall formed by at least part of a cylinder, such as for instance a round cylinder or an oval cylinder, wherein said relatively thin wall has a wall thickness (T310) being at most 10% of the outer diameter of said cylinder, wherein said outer diameter of said cylinder is to be understood as the cross-sectional height or the cross-sectional width of the cylinder or as the largest one thereof, and that said relatively thin wall formed by at least part of the cylinder is provided with flanges (311, 311a, 311b, 311, c) and/or rib or wall portions . that the first hinge pin receiving space is at least partly defined by a relatively thin wall formed by at least part of a cylinder, such as for instance a round cylinder or an oval cylinder, wherein said relatively thin wall has a wall thickness (T310) being at most 10% of the outer diameter of said cylinder, wherein said outer diameter of said cylinder is to be understood as the cross-sectional height or the cross-sectional width of the cylinder or as the largest one thereof, and that said relatively thin wall formed by at least part of the cylinder is provided with flanges (311, 311a, 311b, 311, c) and/or rib or wall portions . <EOS>