DIN 16742-TG5 is a clear, structured, and widely accepted industry standard for defining general tolerances for plastic injection moulded parts. It occupies the critical middle ground between cost-effectiveness and achievable precision, serving as the default tolerance class for the majority of standard applications. By adopting and correctly applying this standard, companies can significantly reduce disputes over acceptance conditions, streamline design and manufacturing processes, and ensure the consistent quality and functional reliability of their plastic components.
: Interestingly, high-quality vacuum casting can also achieve TG5 levels of accuracy, making it a viable bridge between prototyping and mass production.
The standard is divided into :
TG5 is widely used as the default standard for conventional injection molding, vacuum casting, and other low-pressure processes.
) provides a systematic framework for determining achievable tolerances in plastic injection molding. Tolerance Group 5 (TG5) din 16742 - tg5
You cannot successfully achieve TG5 tolerances without evaluating the plastic resin. DIN 16742 categorizes materials by their volumetric shrinkage behavior into groups ranging from to Group D (high shrinkage) . Resin Type Shrinkage Behavior Compatibility with TG5 Amorphous Low, predictable shrinkage ( ABS, PC, PMMA, PS
If your product logic dictates that you must design to DIN 16742 TG5, follow these design rules to ensure your molding partner can hit the target yield rates: DIN 16742-TG5 is a clear, structured, and widely
is the most practically applicable "fine" grade for serial production. It is often misunderstood as "the best possible," but in reality, it represents the optimal balance between precision and manufacturability.
Under DIN 16742, tolerances are not fixed values; they scale relative to the of the part. As the size of the feature increases, the allowable tolerance window widens. The standard distinguishes between two types of dimensions: Tolerance Group 5 (TG5) You cannot successfully achieve
To help tailor this breakdown to your production needs, could you share a bit more context? Let me know: The specific you plan to use The maximum size of the component
Tool cost reduced by 18%. First-pass yield reached 97% (vs 82% if full TG5). The housing passed 95°C thermal shock testing.