This hex nut is manufactured to the DIN 934 standard and features metric threading. It's made from stabilized A5 stainless steel (1.4571), an A4 stainless steel alloyed with titanium. This titanium addition reduces the risk of intergranular corrosion caused by welding. Grade 1.4571 is primarily used for hard-to-reach connections in chloride or sulfur dioxide environments. Due to the titanium content, this material cannot be polished to a high-gloss finish.