Iso 20457 Tolerance Table Pdf Site

The (Tolerance Group 6) is a commonly used general tolerance for simple production settings. Below is the technical data for nominal dimension ranges (all values in mm) as referenced from sources like OKW Gehäusesysteme . Nominal Range (Over) W (Tool-Specific) NW (Non-Tool-Specific)

: Tolerances are assigned based on the nominal dimension of the part (e.g., < 1mm, 1–6mm, 6–30mm, etc.). Material Influence

The tables for fittings often include:

For manufacturing engineers, purchasing the official ISO 20457:2018 PDF from your national standards body is an essential investment. The standard belongs on every plastics engineer’s reference shelf alongside ISO 2768 (for machined components) and ISO 22081 (for surface profile tolerancing).

This standard replaces older frameworks like and DIN 16742 . It serves as the definitive reference for part designers, toolmakers, and quality engineers. This article breaks down the ISO 20457 tolerance table , explains how to calculate specific tolerance limits, and highlights how to apply these rules to your manufacturing workflows. What is ISO 20457? iso 20457 tolerance table pdf

. It replaces the withdrawn DIN 16901 and DIN 16742 standards, providing a modern framework based on Tolerance Groups (TG) rather than generic fixed values. Key Tolerance Classifications organizes tolerances into Tolerance Groups (TG)

| Nominal Dimension (mm) | Tolerance (± mm) | |-------|-----------------| | up to 3 | ±0.07 | | 3–6 | ±0.12 | | 6–10 | ±0.18 | | 10–18 | ±0.22 | | 18–30 | ±0.26 | | 30–50 | ±0.31 | | 50–80 | ±0.37 | | 80–120 | ±0.57 | | 120–180 | ±0.80 | | 180–250 | ±0.93 | | 250–315 | ±1.05 | | 315–400 | ±1.15 | | 400–500 | ±1.25 | | 500–630 | ±1.40 | | 630–800 | ±1.60 | | 800–1000 | ±1.80 | The (Tolerance Group 6) is a commonly used

The standard provides general tolerances for linear dimensions, radii, angular dimensions, flatness, concentricity, roundness, and surface profile.

By understanding and correctly applying the ISO 20457 tolerance table, you will design parts that are not only functional but also economically producible—saving time, reducing costs, and ensuring customer satisfaction. This article breaks down the ISO 20457 tolerance

While the full standard is a paid document, several engineering resources provide summarized tables for common applications. Tolerance Groups (TG1–TG9)