While the full standard includes complex tables based on nominal size ranges, TG5 can be summarized as:
Title: Precision Requirements for Injection Moulded Parts – Tolerance Grade TG5 per DIN 16742 din 16742 - tg5
DIN 16742 is the German industry standard governing . It replaces the older standards DIN 16901 and VW 13010, providing a unified, modern system for defining form, orientation, and dimensional accuracy. While the full standard includes complex tables based
| Nominal Size Range (mm) | Approximate Tolerance Class TG5 (mm) | Practical Interpretation | |------------------------|--------------------------------------|---------------------------| | 0 – 10 | ±0.05 to ±0.08 | Very tight; requires stable process & precision mold. | | 10 – 50 | ±0.08 to ±0.12 | Typical for functional bearing/shaft fits. | | 50 – 160 | ±0.12 to ±0.20 | Demanding for larger parts; watch for warpage. | | 160 – 400 | ±0.20 to ±0.35 | High precision for large geometries; design must minimize stress. | Note: Actual values depend on material shrinkage, part geometry, and feature type (free dimension vs. fixed dimension). Always refer to the latest DIN 16742 tables. | | 10 – 50 | ±0
Within this standard, represents a high-precision classification. It is typically applied to parts that require tight functional fits, consistent assembly behavior, or superior geometric stability without resorting to post-molding machining.