Din 16742 - Tg5 |verified| -

Injection moulding is the primary manufacturing method associated with TG5. For prototype and low-volume production, can also achieve TG5 tolerances, with a minimum tolerance of ±0.1 mm and general tolerances of 0.4 – 0.5% of the nominal dimension.

Choose materials with low, predictable shrinkage rates (e.g., POM, PA66 + 30% GF) to make achieving TG5 more attainable.

DIN 16742-TG5 is the designated tolerance group for . It is the default choice for general tolerances on engineering drawings and is the standard applied by many manufacturers for their standard injection moulding processes. The specification "DIN 16742 – TG5" in a drawing's title block defines the permissible general tolerances for all features not explicitly dimensioned.

, TG5 is typically applied to parts where dimensional accuracy is paramount, but absolute "tight" tolerances (like TG1 or TG2) are not functionally required. Application din 16742 - tg5

: He ensured uniform wall thickness to prevent the "warpage" that often plagues high-shrinkage plastics.

Achieving TG5 is —it is a feature of the manufacturing process .

TG5 requires stricter control over the molding process. Anisotropic shrinkage (variations in shrinkage due to flow direction) is harder to manage at this level, meaning designers must work closely with molders to optimize gating and cooling. 2. Tooling Precision Requirements DIN 16742-TG5 is the designated tolerance group for

Standard wall thickness for injection molding generally ranges from

[Tight Tolerances / High Cost] [Coarse / Lower Cost] TG1 ---> TG2 ---> TG3 ---> TG4 ---> TG5 ---> TG6 ---> TG7 ---> TG8 ---> TG9 | [Precision Injection] Tool-Fixed vs. Non-Tool-Fixed Dimensions

If you need the full text of the standard, I recommend checking the following sources: , TG5 is typically applied to parts where

Here's a brief overview:

Areas requiring precise sealing interfaces.

| Tolerance Group (TG) | TG1 | TG2 | TG3 | TG4 | | TG6 | TG7 | TG8 | TG9 | |----------------------|-----|-----|-----|-----|--------|-----|-----|-----|-----| | Point sum | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |

mm (values vary based on whether the dimension is "tool-specified" or "non-tool-specified"). Tool-Specified vs. Non-Tool-Specified Dimensions