ISO 898-1 — Mechanical Properties of Carbon Steel and Alloy Steel Bolts, Screws and Studs
Standard: ISO 898-1
ISO 898-1 defines the metric property classes — 4.6, 5.8, 8.8, 10.9, 12.9 — for bolts, screws, and studs, and how to read the markings.
What It Covers
- Property classes 4.6 to 12.9
- Tensile and yield (proof) strength
- Marking system (e.g. 8.8, 10.9)
- Test methods and materials