phillip head screw,with different sizs , materials, finishes and standards .

phillip head screw

standard : JIS , DIN . AISI, GB .

material : carbon steel , stainless  steel , alloy steel .

class: class4 . class 8, class10.9,class12.9. grade2,grade5,grade8,...

finish: plain, black oxide , blue zinc ,yellow zinc , black zinc , nickel and so on.