1.Name:Brass roset washer 2.Size: M3-M20 3.Grade: SAE,USS,F436 4.Material: ... FinishPlain, Zinc plated,Passivated, Nickle plated, H.D.G., Black Oxided, Dacromet,Geomet,etc7.Production TechniqueStamping, Machining,etc8.Production Capacity60Tons/ ... , Zinc plated,Passivated, Nickle plated, H.D.G., Black Oxided, Dacromet,Geomet,etc6.Production TechniqueStamping, Machining,etc7.Production Capacity60Tons/ ...