Overview - ISO 1051:1999 (Rivet shank diameters)
ISO 1051:1999 is an International Standard published by ISO/TC 2 (Fasteners) that defines rivet shank diameters for general-use rivets (excluding blind rivets). The standard specifies two series of nominal shank diameters covering the range 1 mm to 36 mm. It replaces ISO Recommendation R 1051:1969 and sets the baseline diameters to be used in ISO product standards and, where practicable, for non‑standardized rivet products.
Key topics and requirements
- Scope: Applies to rivets for general use except blind rivets - blind rivets are explicitly excluded because they use different shank diameters.
- Nominal shank diameters: The standard lists the approved nominal diameters to be used when specifying rivet shanks. These diameters include:
- 1, 1.2, 1.4, 1.6, 2, 2.5, 3, 3.5, 4, 5, 6, 7, 8, 10, 12, 14, 16, 18, 20, 22, 24, 27, 30, 33, 36 (millimetres)
- Two series: Diameters are grouped into two series (main and secondary series) to provide a standardized progression of sizes for design and production.
- Mandate for product standards: When preparing ISO product standards for rivets (except blind rivets), the diameters in ISO 1051:1999 shall be used. The same diameters are recommended for non‑standardized products where possible.
- Technical scope limitations: The standard specifies diameters only - it does not define material, head geometry, tolerances beyond nominal size, or installation procedures.
Applications and users
ISO 1051:1999 is practical for:
- Mechanical engineers and product designers specifying riveted joints in machinery, vehicles, structures, and consumer products.
- Fastener manufacturers setting catalogued rivet sizes and tooling requirements.
- Procurement and quality engineers ensuring component interchangeability and compliance with ISO product standards.
- Standards developers preparing or updating ISO product standards for rivets.
Practical benefits:
- Ensures consistent nominal shank sizing across manufacturers.
- Simplifies design choices and tooling for common rivet sizes.
- Improves interchangeability and supply-chain compatibility for riveted assemblies.
Related standards
- Other ISO product standards for rivets (refer to the relevant ISO product standards for head shapes, tolerances and material specifications).
- ISO/TC 2 (Fasteners) publications and related fastener standards for complementary dimensional and mechanical requirements.
- Note: Blind rivet standards are separate - consult the specific ISO standards that cover blind rivet dimensions and performance.
Keywords: ISO 1051:1999, rivet shank diameters, nominal shank diameters, main series, secondary series, rivets (except blind rivets), fasteners, ISO standard.
