ISO 20457:2026
International Standard
Current Edition
·
Approved on
06 August 2026
Plastics moulded parts — Tolerances and acceptance conditions
ISO 20457:2026 Files
null Pages
Current Edition
ISO 20457:2026 Scope
This document specifies geometrical and dimensional tolerances for plastic moulded parts including:
- limits of technical manufacturability according to the manufacturing effort for direct tolerances;
- general tolerances of plastic moulded parts;
- acceptance conditions of plastic moulded parts;
- modification of the drawing default according to ISO 8015, in accordance to the environmental conditions common in the plastics industry.
This document is applicable to non-porous moulded parts made from thermoplastics, thermoplastic elastomers and thermosets of thermoplastics, made by injection moulding, injection compression moulding, transfer moulding, compression moulding and rotational moulding. This document is applicable to other plastic processes, if agreed to by the contractual parties.
Moulded part surface imperfections such as sink marks, undesired flow structures and roughness, as well as joint lines are not addressed in this document.
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