TS EN ISO 26909

TS EN ISO 26909 is a terminology standard for the metal springs industry. It brings together the terms and definitions used to describe springs in a consistent way, especially where they appear in technical product documentation, and it also includes spring-related heat-treatment and surface-treatment terms.

How the spring vocabulary is organised

The standard’s main value is that it arranges spring concepts into a clear vocabulary structure rather than treating them as an unstructured list. The terms are grouped into seven categories: general features of springs, application in machinery and engineering, layout and nomenclature, specification requirements, design and calculation, manufacturing and processing, and testing and inspection. This makes it easier to discuss springs not only as physical components, but also in terms of their function, manufacture, and verification.

Why this matters in technical documentation

In general engineering practice, springs are used to store energy, return components to position, manage load, and help control vibration. Accurate terminology matters because different spring types and features must be distinguished clearly in drawings, specifications, catalogues, and inspection records. By standardising definitions, this document supports clearer communication across design, production, and quality-related documentation.

• Terms are compiled for common use in the metal springs industry.
• It provides a shared vocabulary for technical product documentation.
• Spring-related heat-treatment and surface-treatment terms are included.
• Annex B gives the hierarchical structure for each terminology category.