... head, Mushroom head, Pan head, Countersunk head,Bugle head, Oval head, Hex flange head, Button head,Triangular head , Round head, Ball head ,Spherical Cheese Head,Hexagon socket head , etc.3.Drive type: Slotted, Phillips, Hex Socket ... SOCKET HEAD BOLTS DIN912ATANDARD:DIN912 /ISO4762SIZE:M3--M24GRADE:8.8,10.9,12.9FINISHED:ZINC PLATED,BLACK OXIDE,HDG,PLAIN,NICKLEPACKING:SMALL BOX head cap screw din912 ...