Material: Carbon Steel
Hardness: 100HV / 200HV / 300HV
Finishes: Plain / Blue-White Zinc Plated / Yellow Zinc Plated / Hot-Dip Galvanized / Blackened / Dacromet
High-Strength Blackened Serrated Lock Washer – Made of high-strength spring steel with quenching heat treatment. Features a precision serrated structure around the entire circumference. The sharp tooth surfaces provide strong gripping, firmly locking onto the contact surface to prevent bolt and nut loosening or shifting. The blackened finish enhances wear resistance and oxidation resistance. Offers good elasticity and high strength. The unique serrated anti-loosening structure provides stable performance. Economical and practical. Widely suitable for heavy machinery, industrial equipment, automotive, agricultural machinery, and other high-strength fastening applications.