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.
DIN ISO 10072:2005 Referenced Document
ISO 2768-1 General tolerances; part 1: tolerances for linear and angular dimensions without individual tolerance indications