... , color zinc-plated, blue black zinc-plated,rust preventive oil, titanium alloy galvanized, silver plating, plastic, electroplating, anodizing etc.Applications Automotive ... .46.68.19.211.512.814.417.1s810131516182127 STEEL HEXAGON SOCKET HEAD BOLTS DIN912ATANDARD:DIN912 /ISO4762SIZE:M3--M24GRADE:8.8,10 ... :ZINC PLATED,BLACK OXIDE,HDG,PLAIN,NICKLEPACKING:SMALL BOX head cap screw din912