Material: Carbon steel
Strength grades: 4.8, 8.8, 10.9, 12.9
Surface finishes: Plain / natural, blue-white zinc plated, yellow zinc plated, hot-dip galvanized, tempered blackened, Dacromet
High-strength Dacromet coated hex socket head cap screw. Treated with an environmentally friendly Dacromet coating, offering no risk of hydrogen embrittlement and high safety. Extremely strong salt spray resistance, high temperature resistance, and corrosion resistance. The coating is environmentally friendly and pollution-free. The hex socket design is suitable for precision installation. Widely used in high-standard anti-corrosion fastening applications such as automotive, rail transit, high-end machinery, and outdoor high-end infrastructure.