DIN EN ISO 3506-1:2020-08
緊固件 耐腐蝕不銹鋼緊固件的機械性能 第1部分:具有規定等級和性能等級的螺栓、螺釘和螺柱
Fasteners - Mechanical properties of corrosion-resistant stainless steel fasteners - Part 1: Bolts, screws and studs with specified grades and property classes (ISO 3506-1:2020); German version EN ISO 3506-1:2020