... SGS Specifications Galvanized slotted pan head half thread self tapping screw Process Capablilities Standard ISO, GB, DIN, JIS, ANSI, BSW, ... 's requiresCoating/Surface treatment Zinc,Tin,Sn/Pb,Nickel,Chrome,Titanium, Cadmium, Dacromet,Heat dip zinc, Chromate , Electro Painting etc ... to excellence, our company makes a good performance in screw industry and develops well with the support of all customers ...