tapping screw 1.Material: C1022 hardened 2.Size: from #6 to #14, equals3.5-6.3 3.Finish:plain, zinc plated, hdg tapping screw 1.Material: C1022 hardened2.Size: from #6 to #14, equals3.5-6.3 3.Finish:plain, zinc plated, hdg 4.Packing: Standard export packing or According to customer's requirement DIN7982 countersunk flat head tapping screw with cross recessed