Material: Carbon Steel
Hardness: 100HV / 200HV / 300HV
Surface Finishes: Plain, Blue-White Zinc Plated, Yellow Zinc Plated, Hot-Dip Galvanized, Black Oxide (Tempered Black), Dacromet
High-Strength Black Oxide Conical Serrated Lock Washer
Black oxide finish for wear resistance and oxidation protection. High hardness and excellent elasticity. Classic one-piece V-shaped conical design ensures even load distribution on the conical surface and tight serration engagement. Provides lasting locking through conical rebound tension, delivering outstanding vibration resistance and anti-loosening performance. Economical and durable. Suitable for high-strength fastening in dry conditions such as heavy machinery, agricultural equipment, and general industrial applications.