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 blue-white zinc plated carriage bolt. Round head with square neck prevents rotation and is easy to install. Blue-white zinc plated finish offers better corrosion resistance than blackened type, with a clean appearance. Carbon steel substrate with precision threads. Suitable for humid and mildly corrosive environments. Widely used in light industry, hardware, small machinery components, and similar fields.