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 blackened carriage bolt. Round head with square neck prevents rotation and theft. Easy to install. Blackened surface finish provides a stable, understated appearance. Carbon steel substrate offers basic corrosion and rust resistance. Precision threads with stable load-bearing capacity. Complies with national and international standards. Cost-effective, suitable for dry environments. Widely used in civilian and industrial applications such as hardware, agricultural machinery, and general machinery.