What is ISO 2692 about?
ISO 2692 defines maximum material requirement (MMR), least material requirement (LMR) and reciprocity requirement (RPR). These requirements can only be applied to linear features of size of cylindrical type or two parallel opposite planes type.
ISO 2692 is a GPS standard and is to be regarded as a general GPS standard. It influences the chain links A, B and C of the chain of standards on size, form, orientation and location.
Note: In GPS standards, threaded features are often considered as a type of cylindrical feature of size. However, no rules are defined in this document for how to apply MMR, LMR and RPR to threaded features. Consequently, application of the tools defined in this document for threaded features is risky.
Who is ISO 2692 for?
ISO 2692 on geometrical product specifications is applicable to:
- Mechanical engineers
- Design engineers
- Independent design agencies and consultancies
- Manufacturing organization that needs to produce engineering drawings in their product design and development processes
Why should you use ISO 2692?
GPS is the international symbol language used to indicate tolerances in technical drawings.
ISO 2692 deals with some frequently occurring workpiece functional cases in design and tolerancing. The MMR can cover, for example, assimilability and LMR can cover, for example, minimum wall thickness of a part. However, the MMR and LMR can also be used to fulfil other functional design requirements.
ISO 2692 is vital for your business to align and update itself with best practices, enhancing efficiency, confidence and reliability in drawings and CAD models. The global acceptance you will receive by adopting ISO 2692 will further expand the reach of your products to a wider audience.
ISO 2692:2021 contributes to UN Sustainable Development Goal 9 on building resilient infrastructure, promoting inclusive and sustainable industrialization and fostering innovation.
What’s changed since the last update?
BS EN ISO 2692:2021 supersedes ISO 2692:2014, which is withdrawn. BS EN ISO 2692:2021 includes some technical changes as compared to ISO 2692:2014. These include:
- Direct indication of maximum material or least material virtual size has been added
- The use of SZ or CZ symbols has been added
- The use of SIM symbol has been added
