It seems you're looking for the (or similar) standard, but there’s a typo in the number.
The original was officially withdrawn on April 25, 2025. In a significant move to streamline technical documentation, ISO has consolidated the previously separate parts of the 14617 series.
If you do → buy the 2021 version .
Searching for "iso 146173 pdf updated" shows you are on the right track – you recognize that outdated graphical symbols introduce risk. However, the correct path is to purchase the genuine from an authorized seller. Do not settle for scanned copies, free websites, or the 2002 version. iso 146173 pdf updated
Despite the change in document number, the core technical requirements for "Connections and related devices" remain vital. The standard (now under Part 2) specifies symbols for:
The series has been tightly condensed to improve digital system architecture and user navigation. The foundational rules and physical components originally outlined in ISO 14617-3 are now consolidated directly into the core ISO 14617-1 and ISO 14617-2 standards.
If a site offers “ISO 14644-3:2024” with major changes, it is likely a fake. The 2024 confirmation only reaffirmed the 2019 text. It seems you're looking for the (or similar)
┌────────────────────────────────────────────────────────┐ │ ISO 14617-3 │ │ (Connections & Related Devices) │ └───────────────────────────┬────────────────────────────┘ │ ┌────────────────────┼────────────────────┐ ▼ ▼ ▼ ┌───────────┐ ┌───────────┐ ┌───────────┐ │ Pipelines │ │ Mechanical│ │ Connecting│ │ & Ducts │ │ Links │ │ Devices │ └───────────┘ └───────────┘ └───────────┘
For the first time, ISO 14617-3:2021 requires that PDF diagrams include machine-readable metadata for each graphical symbol (using ISO 15926 format). This is critical for AI-based diagram validation.
The series serves as the international standard for graphical symbols used in technical documentation, engineering diagrams, and industrial schematics. ISO 14617-3:2002 , titled "Graphical symbols for diagrams — Part 3: Connections and related devices," is a critical component for engineers, designers, and technicians mapping out systems. If you do → buy the 2021 version
Outdated symbols in instrumentation and control have been deleted.
Using the withdrawn 2002 version of Part 3 could lead to non-compliance in modern engineering handovers. The new ISO 14617-2:2025 now serves as the primary harmonized library for: Pipelines and mechanical links Connection joints, ports, and terminals Quick-release couplings and connectors How to Get the Updated PDF
: Physical ties, shafts, and mechanical coupling indicators.
Physical rods, linkages, and mechanical tethers transferring force or motion.