ISO 10303-519-2000 PDF

Full title and description

Industrial automation systems and integration — Product data representation and exchange — Part 519: Application interpreted construct: Geometric tolerances. This part of ISO 10303 (STEP) defines an Application Interpreted Construct (AIC) providing an EXPRESS schema and data definitions to represent geometric tolerances, datum systems and related derived geometry for product data exchange.

Abstract

ISO 10303-519:2000 specifies a STEP Application Interpreted Construct for geometric tolerances that supports the representation and exchange of geometric dimensioning and tolerancing (GD&T) information (as framed by ISO 1101 and related GPS standards). The part includes an EXPRESS schema with entity and type definitions, rules for expressing tolerance values and datum systems, and annexes with normative short names and object identifiers plus informative EXPRESS-G diagrams and machine-readable lists.

General information

• Status: Published (International Standard confirmed).
• Publication date: March 2000 (Edition 1, 2000-03).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.040.40 (Product data representation and exchange).
• Edition / version: Edition 1 (2000).
• Number of pages: 32 pages.

Scope

This part of ISO 10303 defines an application-level construct to represent geometric tolerance information required to describe permissible deviations of physical product features (form, orientation, location and run-out), datum systems, tolerance values and symbols, and derived geometric elements (for example axes and intersections). It provides an EXPRESS schema and associated conventions to enable consistent exchange of GD&T data across CAD/CAM/PLM applications.

Key topics and requirements

• EXPRESS schema for geometric tolerances and datum systems (entity and type definitions).
• Representation of tolerance types: form, orientation, location and run-out including tolerance values and symbolic notation.
• Definitions and handling of datum systems and datum targets consistent with ISO GPS practice.
• Identification and representation of derived geometric elements (axes, intersection points) used when applying tolerances.
• Annexes providing short names, object identifiers, EXPRESS-G diagrams and machine-readable lists to aid implementation.

Typical use and users

Implementers of STEP (CAD/CAM/PLM vendors), software developers for inspection and measurement systems, systems integrators working on product data exchange, standards committees and quality engineers who need machine-readable GD&T data for design, manufacturing and inspection workflows. The part is used where accurate interchange of geometric tolerance information between tools is required.

Related standards

ISO 10303-519 is part of the ISO 10303 (STEP) family (parts 501–520 cover Application Interpreted Constructs). It is closely related to geometric specification standards such as ISO 1101 (Geometrical product specifications — Geometrical tolerancing) and other STEP resource and AIC parts (for example ISO 10303-514 and other 500-series parts addressing geometry and representation).

Keywords

ISO 10303, STEP, application interpreted construct, AIC, geometric tolerances, GD&T, EXPRESS schema, datum system, product data exchange, ISO 1101.

FAQ

Q: What is this standard?

A: ISO 10303-519:2000 is a part of the STEP family that defines an Application Interpreted Construct (AIC) and EXPRESS schema for representing geometric tolerances and associated datum information for product data exchange.

Q: What does it cover?

A: It covers the data definitions, entity types and conventions needed to represent form, orientation, location and run-out tolerances, tolerance values and symbols, datum systems and derived geometric elements to enable unambiguous exchange of GD&T information.

Q: Who typically uses it?

A: CAD/CAM/PLM software vendors, implementers of STEP, inspection and metrology software developers, systems integrators and engineering/quality professionals who need standardized, machine-readable GD&T data.

Q: Is it current or superseded?

A: ISO 10303-519:2000 was published in March 2000 (Edition 1). According to ISO's records the standard has been regularly reviewed and was confirmed as current in 2024, so this edition remains the current published version.

Q: Is it part of a series?

A: Yes — it is part of ISO 10303 (the STEP family). Specifically it belongs to the 500-series Application Interpreted Constructs (AIC) that provide modular, reusable constructs used across application protocols.

Q: What are the key keywords?

A: STEP, ISO 10303, geometric tolerances, GD&T, AIC, EXPRESS, datum, product data exchange.