Hexagon Nuts with Flange Zhejiang Ruibo Auto Parts Co., Ltd Base Info Model NO.:DIN6923Material:Carbon SteelType:Hexagon Head With FlangeConnection:Common BoltHead Style:HexagonalStandard:DIN, ANSI, GBGrade:12.9Trademark:LibiaoOrigin:China Description Pre:Nylon Insert Lock Nuts Hex Next:Nut-DIN934+936+935+6923+985+980+982 etc.