Table Pdf: Iso 20457 Tolerance

These tolerances apply to dimensions that are influenced by factors outside of the mold cavity itself.

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Values are approximate based on standard industry applications of ISO 20457/DIN 16742 . iso 20457 tolerance table pdf

and provides a structured approach to tolerancing based on material properties and manufacturing complexity. Super-Ingenuity Core Tolerance Framework The standard uses Tolerance Grades (TG)

| Nominal size (mm) | PT3 (Fine) | PT5 (Medium) | PT7 (Coarse) | |------------------|------------|--------------|---------------| | up to 10 | ±0.10 | ±0.25 | ±0.50 | | 10 – 25 | ±0.15 | ±0.35 | ±0.70 | | 25 – 63 | ±0.20 | ±0.45 | ±0.90 | | 63 – 100 | ±0.30 | ±0.60 | ±1.20 | | 100 – 160 | ±0.40 | ±0.80 | ±1.60 | These tolerances apply to dimensions that are influenced

If tolerances are too loose, parts may not fit or perform as designed.

While the full standard is a paid document, several manufacturers and technical forums provide summary tables and PDF guides: PolTolerances Guide (PDF): If you share with third parties, their policies apply

The standard distinguishes between two fundamental types of dimensions based on their relationship to the mold:

Understanding ISO 20457: The Ultimate Guide to Plastic Molded Part Tolerances

Below is a simplified reference table mapping the nominal dimensions (mm) against standard Tolerance Grades (TG) for Series W (Tool-Dependent) dimensions. Note: All values below are in millimeters ( ± mmplus or minus mm

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