2021UNE-EN ISO 3506-1:2021 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)
2010UNE-EN ISO 3506-1:2010 Mechanical properties of corrosion-resistant stainless steel fasteners - Part 1: Bolts, screws and studs (ISO 3506-1:2009)
1998UNE-EN ISO 3506-1:1998 MECHANICAL PROPERTIES OF CORROSION-RESISTANT STAINLESS-STEEL FASTENERS. PART 1: BOLTS, SCREWS AND STUDS. (ISO 3506-1:1997).