- Tg5: Din 16742
Note: Actual values must be referenced from the official DIN 16742 tables.
Materials are classified by shrinkage rates (e.g., din 16742 - tg5
represents the standard commercial accuracy tier for a vast array of technical plastic parts. It balances high-quality functional repeatability with cost-effective manufacturing constraints. Designing a part to meet TG5 specifications implies that the component requires strict dimensional control to ensure proper assembly or mechanism function, but stops short of requiring hyper-expensive ultra-precision tooling. 3. Dimensional Breakdown of TG5 Tolerances Note: Actual values must be referenced from the
falls in the middle of the standard spectrum, situated between the highly precise lower groups (TG1–TG3) and the looser, general-purpose higher groups (TG6–TG7). Designing a part to meet TG5 specifications implies
Most injection molders will warn against specifying TG7 or TG8 for mass production. While they are mathematically possible, they drive tooling costs up by 40–60% and scrap rates through the roof.