Din 16742 — - Tg5
: Applying TG5 to a drawing ensures functional reliability without the exponential cost increase associated with ultra-tight groups (TG1–TG3). It is the "sweet spot" for parts requiring fit-and-function accuracy without excessive scrap rates. Key Strengths of the Standard Simplification
DIN 16742 - TG5 is not a single number. It distinguishes between three tolerance categories: din 16742 - tg5
standard is a critical German guideline for determining tolerances for plastic moulded parts, and the TG5 (Tolerance Group 5) : Applying TG5 to a drawing ensures functional
| Criteria | Requirement | |--------------------------------|-------------------------------------------------------| | Typical tolerance at 50 mm | ±0.30 mm | | Draft angle for 30 mm depth | ≥ 1.0° per side | | Geometric tolerance per 100 mm | 0.25 – 0.30 mm | | Suitable materials | Most unfilled thermoplastics, some filled compounds | | Inspection condition | 23°C, 24h after molding | | Cost impact | Neutral – standard | din 16742 - tg5
Do not default to TG5. Specify it only for:
