Flat Hex Socket Head Self Tapping Furniture Confirmate Screws and Bolts Fasteners1.Product Specification... Raw Materials 1.StainlessSteel:SS201,202,303,304,316,321,410,420,etc. 2.Steel:C45(K1045),C46(K1046),C20,etc. 3.Brass:C36000(C26800),C37700(HPb59),C3850(HPb58),C27200CuZn37),C28000(CuZn40),etc. 4.Bronze:C51000,C52100,C54400,etc. ..