TECHNICAL LIBRARY · ISO FASTENER MATERIAL SELECTION
ISO 3506-6:2020 — Stainless and Nickel-Alloy Selection for Fasteners
Procurement reference for material-selection rules supporting corrosion-resistant fastener specifications.
Edition control: ISO 3506-6:2020 is published and was confirmed in 2025. Confirm the authorised publication and order requirements before use.
Scope in Procurement
ISO 3506-6 provides general rules and technical information for selection of stainless steels and nickel alloys suitable for fasteners and is intended for use with the relevant finished-fastener parts of ISO 3506.
RFQ and Finished-Fastener Controls
- Joint environment, temperature and design life
- Candidate stainless or nickel-alloy fastener material
- Applicable finished-fastener part of ISO 3506
- Property class, geometry, thread and load requirements
- Galvanic compatibility with clamped materials
- Fabrication, coating, passivation and installation requirements
- Inspection, traceability and maintenance plan
A raw-material certificate does not establish finished-fastener compliance. The report must trace the finished lot, tests and marking to the exact standard and order.
Scope Boundary
ISO 3506-6 supports material selection; it is not a standalone finished-fastener product specification and does not replace engineering assessment of corrosion, temperature, preload or joint design.
Related MNK Technical Pages
Official Publication and Access Policy
Check the official record for ISO 3506-6:2020. Protected grade tables, property values, dimensions and test clauses are not reproduced on this website.
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