Overview
ISO 2162-1:1993, "Technical product documentation - Springs - Part 1: Simplified representation," defines rules for the simplified graphical representation of springs on technical drawings. It standardizes how compression, extension, torsion, disc (Belleville), spiral and leaf springs and their elements are shown in technical product documentation to improve clarity, interoperability and manufacturing communication.
Key topics and requirements
- Scope: Applies to simplified representations of common spring types used in mechanical engineering drawings.
- Representation conventions:
- Coiled wire springs: shown by a line following the axis of the spring wire.
- Cross-section indication: cross-section of the spring material shall be indicated. For cylindrical wire springs some conventional graphical symbols (per ISO 5261) may be omitted; non-cylindrical cross-sections must be shown with appropriate symbols.
- Direction of helix: right-hand (RH) is assumed as normal; left-hand (LH) must be explicitly indicated.
- Shape of ends: ground ends vs other end configurations - ground ends often need no special note, while other end shapes must be specified with dimensions when necessary.
- Specific spring families covered:
- Helical compression (cylindrical, conical, combinations)
- Helical extension
- Torsion (including torsion bar and stacked laminated torsion)
- Disc (single and multi-disc/Belleville spring assemblies)
- Spiral (including constant-force springs and motor types)
- Leaf springs (laminated, parabolic, with/without eyes, auxiliary/helper arrangements)
- Drawings and examples: The standard provides representative simplified views and sections as examples for each spring type (illustrative, not exhaustive).
Applications and users
ISO 2162-1:1993 is intended for anyone creating or reading technical product documentation that includes springs. Typical users include:
- Mechanical engineers and designers
- Draftspeople and CAD technicians producing assembly and part drawings
- Spring manufacturers and suppliers
- Automotive, aerospace and industrial machinery designers specifying spring components
- Technical writers and standards compliance teams ensuring consistent document presentation
Benefits include clearer communication between design, manufacturing and quality teams, reduced interpretation errors on shop drawings, and faster review cycles.
Related standards
- ISO 2162-2:1993 - Presentation of data for cylindrical helical compression springs (complements Part 1)
- ISO 2162-3 - Vocabulary (part of the ISO 2162 series)
- ISO 5261:1981 - Technical drawings - graphical symbols for structural metalwork (referenced for cross-section symbols)
Keywords: ISO 2162-1:1993, simplified representation, technical product documentation, springs, helical compression spring, extension spring, torsion spring, disc spring, spiral spring, leaf spring, technical drawings.
