Hex Nut Cixi Huicheng Metal Products Co., Ltd. Base Info Material:Carbon SteelType:Hexagon HeadConnection:Common BoltHead Style:HexagonalStandard:DINOrigin:Zhejiang Description Pre:Single Coil Spring Washers /Double-Play Washers Next:Municipal Water Supply and Drainage Pipeline Stainless Steel Repair Clamp Body Part Cam Lock Coupling