Dacromet half-thread bolt is carbon steel hex bolt with Dacromet zinc flake coating. Dacromet is inorganic non-electroplating coating. It features excellent salt spray resistance and good heat resistance. It avoids hydrogen embrittlement risk. Half thread design: smooth shank on head side, threaded section at the end. Common strength classes:8.8,10.9,12.9. Widely used for outdoor, coastal, high-corrosion environment, such as wind power, bridge, highway steel structures.