TS EN ISO 8062-1

TS EN ISO 8062-1 is a vocabulary standard that gathers the terms and definitions used to describe dimensional and geometrical tolerances for moulded parts within the geometrical product specifications (GPS) framework. Rather than prescribing the tolerances themselves, this part focuses on the language used to identify part features, form and tolerance types so that design, drawing practice and inspection can be based on the same concepts.

In GPS, terminology matters because the way a feature, a form deviation or a tolerance zone is named affects how the requirement is interpreted. For moulded parts, this common vocabulary helps engineers discuss dimensional and geometrical characteristics in a consistent way, regardless of the manufacturing route. The standard’s subject is the terminology used to classify and describe these concepts for parts made by moulding processes.

How the technical terms fit together

A vocabulary document of this kind clarifies the difference between a feature, a form characteristic and a tolerance type. A feature is the measurable element on the part; form concerns the departure of that element from ideal geometry; and a tolerance type is the category used to define the permitted variation. In engineering practice, these distinctions support consistent interpretation of drawings, inspection plans and quality documentation. TS EN ISO 8062-1 provides the terminology needed to standardise that language for moulded parts.

Its practical value is consistency: when designers, quality engineers and metrology specialists use the same terms, dimensional and geometrical requirements are less likely to be misunderstood. That makes it easier to relate part function, manufacturability and inspectability in a controlled technical context.