hexagon socket head cap screw the standard one we have ... your requirement delivery is fast and cheap For the hexagon socket head cap screw we can make as your requriement! ... dip galvanization, Dacromet and other kinds. The products are produced in conformity with DIN, ANSI, AS, BS, JIS, GB, ... ISO or nonstandard specifications or against customers' requirements, in grades of 4.8, 6.8, 8.8, 10.9 ...