Many reputable injection molders provide tailored PDFs or links, often referencing DIN ISO 20457, which is functionally the same. Steps to Apply the Table:
Understanding dimensional tolerances for plastic injection molded parts is crucial for designers, engineers, and manufacturers. Unlike metals, plastics are sensitive to thermal expansion, moisture absorption, and molding process variations. (which supersedes DIN 16742) provides the standardized framework for these tolerances, replacing older, less applicable metal-based standards. iso 20457 tolerance table pdf
If you need to calculate a specific for a project, feel free to share your nominal dimensions , plastic material type , and whether the features are tool-dependent , and I can help you find the exact values. Share public link Many reputable injection molders provide tailored PDFs or
The is more than a grid of numbers; it is a strategic tool for balancing cost and quality. By understanding the three tolerance classes (Fine, Medium, Coarse) and knowing how to navigate the linear and angular tables, you can produce drawings that are both professional and manufacturable. By understanding the three tolerance classes (Fine, Medium,