SWEBOLT & BOTNIA BOLT supply fully threaded hex bolts ISO 4017 / DIN 933, in property class 8.8 per ISO 898-1, hot-dip galvanized (HDG) for long-lasting corrosion protection. The thick zinc coating provides excellent resistance in outdoor and structural applications demanding durability and strength. Suitable for construction, industrial, and infrastructure use where corrosion protection and reliability are critical.