... , SS304, SS316, SS410, SS4202,Steel:C45(K1045), C46(K1046),C203.Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200CuZn37), C28000(CuZn40)4 ... proud to present you our reliable and durable self tapping screw series.Other than self tapping screws,Jinri's major product line includes chipboard screw ...