Duplex Acorn Nut (98-0016-1) Yangzhou Haina Auto Parts Manufacturing Co., Ltd. Base Info Model NO.:98-0016-1Material:Carbon SteelType:Pan HeadHead Style:HexagonalStandard:GBGrade:8.8Origin:China Description Pre:Duplex Acorn Nut (98-0022) Next:ATV Flatl Nut (98-0021)