... screw cap,High strength bolts Specification:1) Meterials: carbon steel, stainless steel, metal, brass, copper, zinc alloy, cold rolled steel with various plating ... Nikel, Chrome, Tin, Ag); Painting, Powder, Anodizing, E-coating, Silkscreen, Heat treatment, Black oxid; 4) Standard/ specification: OEM ... feel free to contact us. Stainless Steel screw brass standoff screw with threads blue zinc plated