Hex socket cap screw according to ISO 12474 standard with metric fine thread (M-fine), strength class 8.8. Fine thread provides improved tightening control, better vibration resistance, and greater thread contact over the same length compared to standard pitch. Available with zinc plated (ZN) or plain (uncoated) surface. The ZN version offers basic corrosion protection for dry or indoor environments, while the plain version is intended for controlled conditions or for later coating such as painting, flake coating, or hot-dip galvanizing (HDG). Available in multiple lengths and dimensions from SWEBOLT & BOTNIA BOLT.