TS ISO 8062-1

TS ISO 8062-1 is a terminology standard for the system of dimensional tolerances and machining allowances used for castings. It gathers the terms and definitions used to describe the features, form, and tolerance types associated with cast parts within the geometrical product specifications (GPS) framework.

Why the terminology matters

Cast components are affected by mould geometry, solidification shrinkage, surface condition and any subsequent machining operations, so the dimensions obtained directly from the casting process rarely match the final design intent exactly. Dimensional tolerances define the acceptable variation, while machining allowances refer to the extra material left for finishing. TS ISO 8062-1 provides the shared vocabulary used to discuss these concepts consistently and clarifies how they are named in a GPS context.

What this standard contributes

• A vocabulary structure for terms and definitions related to casting tolerances
• Concepts used to name features, forms and tolerance types
• Terminological alignment within geometrical product specifications (GPS)
• A common reference for distinguishing dimensional tolerances from machining allowances

This listing is based on ISO 8062-1:2007 and is shown here as a withdrawn TSE standard. Its value lies in the technical language and conceptual framework of castings tolerancing rather than in prescribing detailed design rules or numerical tolerance values.