Product Name: Carbon Steel Hex Wood Screw with Steel and Rubber Washer Model NO.: SW-ST018 Customized: Non-Customized Certification: ISO Surface Finishing: Zinc Plated Shape of Groove: Cross Shape of Head: Hexagon Material: Iron Production Time: 30 Days Trademark: OEM Transport Package: Carton Pallet Specification: 5/16x4-1/2 Origin: China Product Description Material: carbon steelSurface: zinc platedSize: 5/16"x 4-1/2"HAINING SHENGWO TRADING CO.,LTD, Located in Zhejiang China, markets , manufactures and stocks a wide range of fasteners. We possess the capacity and the experience to meet customers request.During the past years we had experienced an increased demand for our knowledge our sales heavily in Poland, Russia, Romania, Ukraine, France...Our aim is to always meet the customers' requests for quality, deliveries and level of service to a competitive cost; we are always taking your request into our consideration. Since we always offer our best services, reasonable prices and punctual delivery , we have a good reputation with our customers.