The Guwanji Grade 8.8 High Strength Flat Washer is engineered for demanding mechanical and structural fastening applications. Constructed from high-grade carbon steel, this washer offers superior tensile strength and consistent load distribution under heavy torque or vibration. The black oxide surface treatment enhances wear resistance and minimizes rust formation while maintaining dimensional stability.

Ideal for use in equipment installation, heavy machinery, and steel structure assembly, where strength and surface protection are critical.