Bolts with hexagon head type AS according to DIN 931 (with shaft) and/or 933 (thread up to the head) or ANSI / ASME B18.2.1. Designed with M6 thread in the lengths required for the fixing of ACT clamps of the Twin Series according to DIN 3015, Part 3. Manufactured from V4A stainless steel (material key: W55) with improved corrosion resistance by the avoidance of metallic and non-metallic contamination during production, machining and storage. STAUFF ACT clamps: Anti Corrosion Technology. Reduce crevice corrosion on the tube.