Table Pdf Better — Iso 20457 Tolerance

| Dimension Range (mm) | W Tolerance (± mm) | NW Tolerance (± mm) | |------|-------------------|---------------------| | 1–3 | 0.07 | 0.12 | | 3–6 | 0.12 | 0.18 | | 6–10 | 0.18 | 0.22 | | 10–18 | 0.22 | 0.26 | | 18–30 | 0.26 | 0.31 | | 30–50 | 0.31 | 0.37 | | 50–80 | 0.37 | 0.57 | | 80–120 | 0.57 | 0.80 | | 120–180 | 0.80 | 0.93 | | 180–250 | 0.93 | 1.05 | | 250–315 | 1.05 | 1.15 | | 315–400 | 1.15 | 1.25 | | 400–500 | 1.25 | 1.40 | | 500–630 | 1.40 | 1.60 | | 630–800 | 1.60 | 1.80 | | 800–1000 | 1.80 | — |

What (e.g., ABS, PA66, PC) you are currently using.

The standard splits production capabilities into different series, reflecting the level of investment in tooling and process control: iso 20457 tolerance table pdf

Whether you are focusing on or quality control inspection .

Plastics absorb moisture and expand or contract with temperature changes. ISO 20457 evaluates parts under standard climate conditions (typically 23°C and 50% relative humidity) after a specific storage period. How to Use the ISO 20457 Tolerance Table | Dimension Range (mm) | W Tolerance (±

Oriented toward higher dimensional accuracy, requiring more rigorous manufacturing and quality assurance. Series 3 (Precision Production):

| 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 | ISO 20457 evaluates parts under standard climate conditions

The standard categorizes workpieces into three main classes:

The standard establishes the international framework for manufacturing tolerances and acceptance conditions of non-porous plastic molded parts . It officially replaces the older German standard DIN 16742 . Accessing a certified ISO 20457 Tolerance Table PDF ensures that engineers, toolmakers, and quality managers use accurate, technically feasible dimensional and geometrical parameters. This prevents over-specification, which reduces tooling costs and manufacturing waste. Why Plastics Need a Unique Tolerance Standard