This International Standard specifies the main dimensions and tolerances, in millimetres, of sprue bushes that are used mainly in injection moulds for plastics and rubbers (an application example is shown in Figure 1). It also specifies the hardness and designation of sprue bushes conforming to this International Standard.
BS ISO 10072:2004 history
2004BS ISO 10072:2004 Tools for moulding - Sprue bushes - Dimensions