China stainless steel self tapping miniature machine precision mini micro screw Product Description 1.Stainless Steel: SS201, SS202,SS302,SS303, SS304, SS316, SS410, SS420,SS430,etc. 2,Steel:C45(K1045), C46(K1046),C20,etc. 3.Brass or brass alloy:H63(CuZn37,C2720);H65(CuZn36,C2700);H68(CuZn33); H70...
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