1)Standard: DIN, ANSI,JIS,GB 2)Material: Carbon Steel 1022,1018 3) ... # 4)Length:9.5~150mm, 3/8"~6 1)Standard: DIN, ANSI,JIS,GB2)Material: Carbon Steel 1022,10183)Diameter: 3 ... #~12#4)Length: 9.5~150mm, 3/8"~6"5)Thread: AB TYPE,A TYPE,B Type6)Head Type:Flat Head ... ,Pozi9)Finish: Plain, Zinc, Black Phosphated, Grey Phosphated bugle head drywall screw