What is the difference between a norm and a technical specification?

The primary difference is that a norm (or technical standard) provides broad, recognized guidelines developed by authoritative bodies for repeated use across an industry, while a technical specification details the specific requirements for a particular project, product, or application.

Norm (Technical Standard)

• Scope: Norms are broad and established for common and repeated use across an entire industry or field.
• Development: They are typically developed by recognized national or international standards organizations (e.g., ISO, CEN, DIN, ASTM) through a consensus process involving various stakeholders and experts.
• Compliance: Conformity to a norm is generally voluntary unless it is specifically incorporated into a contract or referenced by law/regulation, making it legally mandatory.
• Purpose: They provide a solid framework, uniform engineering criteria, methods, and practices, often for comparison and quality assurance.
• Focus: They often state the "what should be" true, acting as a baseline for quality and safety.

Technical Specification

• Scope: A technical specification is a precise description of requirements limited to a specific project, company, or product.
• Development: It is often generated by an individual company, a specific government agency, or the project designer to meet the unique needs of an application.
• Compliance: When part of a contract or project documentation, compliance is mandatory for that specific project.
• Purpose: It acts as a blueprint for the construction or manufacturing process, ensuring the final product meets exact requirements and eliminating ambiguity for that specific instance.
• Focus: It details the specific technical implementation, describing the minute details of the design, materials, components, and methods to be used (the "how" or "what is to be built").