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自攻螺釘 ? 六角頭自鉆自攻螺釘 Hexagon washer head drilling screws with tapping screw thread DIN EN ISO 15480 | 代替 DIN 7504 ? 六角凸緣頭自鉆自攻螺釘 Hexagon washer head drilling screws with tapping screws thread DIN EN ISO 15480 ? 十字槽盤頭自鉆自攻螺釘 Cross recessed pan head drilling screws with tapping screw thread DIN EN ISO 15481 ? 十字槽盤頭自鉆自攻螺釘 Cross recessed pan head drlling screws with tapping screw thread DI