Material: Carbon steel
Strength grades: 4, 8, 10, 12
Surface finishes: Plain / natural, blue-white zinc plated, yellow zinc plated, hot-dip galvanized, tempered blackened, Dacromet
Long hexagon profile for easy wrench operation and secure holding. High material hardness and strong load-bearing capacity. Extended thread design ensures tight connection, resisting thread stripping and deformation. Professionally blackened for rust prevention, offering excellent oxidation and corrosion resistance, effectively extending service life. Suitable for heavy machinery, industrial frames, assembly line equipment, heavy-duty components, and similar applications. Cost-effective, meeting high-strength connection and fastening requirements.