ISO 7380-3:2026, Fasteners — Button head screws with reduced loadability, Part 3: Hexalobular socket button head screws
Hexalobular socket button head screws in steel and stainless steel with metric coarse pitch threads from M3 to M12, and product grade A.
- The description claims a limitation of ultimate tensile load marked by a specific property class.
- The loadability in the head is assumed to be 80% of that in the thread.
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