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Even for very small dimensions, a tolerance smaller than ±0.1 mm is generally not economically feasible for most injection moulding processes.
The standard provides as guidance for assigning plastic moulding compounds to the correct tolerance groups, ensuring a consistent and logical method of classification. The selection process considers influencing factors, each with a corresponding point score to determine the appropriate group. din 16742 - tg5
Requires optimized cooling, precise processing, and often fiber reinforcement (e.g., PA6-GF30) to meet TG5. Production Impact of Specifying TG5 Even for very small dimensions, a tolerance smaller than ±0
If a manufacturer were to specify TG1 for a semi-crystall Even for very small dimensions
These materials exhibit low and isotropic (uniform) shrinkage. They easily achieve TG5 tolerances.
Or, in a multi‑component part: