Overview
ISO 8062-1:2007 is the first part of the ISO 8062 series for geometrical product specifications (GPS) of moulded parts. Its primary purpose is to establish a consistent vocabulary - terms and definitions - used when assigning dimensional and geometrical tolerances to parts produced by moulding processes. The standard covers moulded products such as castings, die forgings, injection-moulded parts, powder metallurgy parts, glass mouldings and rubber mouldings and defines language for features, form, tolerance types and related manufacturing elements (mould, die, cavity, core, etc.).
Key Topics
- Vocabulary for moulded parts: Definitions of “moulded part,” “raw moulded part,” “final moulded part,” and process-specific part types (casting, injection moulded part, die forging, powder metallurgy part, glass and rubber mouldings).
- Manufacturing equipment terms: Clear names for mould components and tooling (mould, die, cavity, core, pattern).
- Process and defect terminology: Terms related to the moulding process, mismatch, surface imperfections and finishing operations.
- Structure and scope: Six clauses covering moulded parts, equipment, manufacturing process, mismatch, surface imperfections and finishing plus an informative Annex A linking this vocabulary to the GPS matrix model.
- GPS alignment: Positioned as a complementary process-specific GPS standard and linked to GPS framework guidance (see ISO/TR 14638).
Applications
Who uses ISO 8062-1 and why:
- Design engineers - to specify clear, unambiguous tolerance callouts and to select appropriate tolerance types for moulded parts.
- Toolmakers and mould designers - to communicate component and cavity terminology consistently with downstream users.
- Quality and inspection teams - to interpret tolerance specifications and to maintain consistent inspection criteria.
- Procurement and suppliers - to ensure contractual clarity on geometric requirements for moulded components.
- Standards writers and technical trainers - as the authoritative vocabulary when teaching or creating documentation on moulding tolerances.
Practical value:
- Improves cross-disciplinary communication across design, manufacturing and quality functions.
- Reduces ambiguity in drawings and specifications to speed up production and reduce rework.
- Serves as the basis for assigning and interpreting dimensional and geometrical tolerances for moulded parts in GPS frameworks.
Related Standards
- ISO 8062-3: General dimensional and geometrical tolerances and machining allowances for castings (companion part).
- ISO/TS 8062-2: (Technical Specification planned) - rules for application.
- ISO/TR 14638: Guidance on GPS and process-specific tolerance standards.
- Developed by ISO/TC 213 (Dimensional and geometrical product specifications and verification).
Keywords: ISO 8062-1, GPS, geometrical product specifications, moulded parts, dimensional tolerances, geometrical tolerances, mould vocabulary, casting, injection moulding, die forging.
Open preview (PDF)Geometrical product specifications (GPS) — Dimensional and geometrical tolerances for moulded parts — Part 1: Vocabulary