Overview - What ISO 16228:2017 covers
ISO 16228:2017 defines the types and required content of inspection documents for finished fasteners (bolts, screws, studs, nuts, washers, pins, rivets, etc.) made of steel, stainless steel, non‑ferrous or non‑metallic materials. It specifies the three principal inspection document types and declaration used by manufacturers, distributors or external authorized representatives when requested at the time of order:
- F2.1 - Fastener declaration of compliance (no test results),
- F2.2 - Fastener test report (results from non‑specific inspection),
- F3.1 / F3.2 - Fastener test reports (results from specific inspection; F3.2 may involve purchaser or external validation).
Note: the standard clarifies that the term “test report” is preferred over the commonly used “certificate.”
Key topics and technical requirements
- Types of inspection: distinguishes non‑specific inspection (results from representative production or in‑process control) and specific inspection (tests on the actual manufacturing lot to be delivered).
- Required content: prescribes mandatory information for each inspection document type (see Clauses 6.x) to ensure clarity and traceability of results.
- Validation and authorization: inspection documents must be validated (signed) by the manufacturer’s authorized representative, distributor, purchaser’s representative or external authorized representative, depending on the document type.
- Traceability and data maintenance: requirements for maintaining production and test data, linking inspection reports to orders, raw material certificates and lot identity.
- Sampling, subcontracted tests, reporting: guidance on sampling practices, inclusion of subcontracted test results, minimum test results to include, and how to report test/inspection outcomes.
- Annexes: Annex A provides example inspection documents; Annex B gives an example coding system for sections in fastener inspection documents.
Practical applications - who uses ISO 16228:2017
- Fastener manufacturers and distributors issuing inspection documents to customers.
- Purchasers and quality engineers who request and review fastener inspection documents as part of procurement and acceptance inspection.
- Third‑party inspection bodies / external authorized representatives validating inspection documents when required by the purchaser.
- Supply chain managers seeking consistent, auditable documentation for procurement, compliance and traceability.
ISO 16228:2017 is widely used where reliable documentation of fastener conformity is required without resorting to more general material document standards.
Related standards
- ISO 10474 / EN 10204 (material inspection documents) - historical references
- ISO 1891‑4 (fastener terminology - control/inspection)
- ISO 3269 (acceptance inspection for fasteners)
- Relevant mechanical property standards (e.g., ISO 898 series, ISO 3506 series)
Keywords: ISO 16228:2017, fasteners inspection, fastener test report, declaration of compliance, F2.1, F2.2, F3.1, F3.2, traceability, in‑process control, specific inspection, non‑specific inspection.
