DIN 6923 Steel Hex Flange Nut Dimension From M3-M52 Suzhou Sudelan Railway Parts Co., Ltd. Base Info Model NO.:DIN 6923 M3-M52Material:Carbon SteelType:Hexagon HeadHead Style:HexagonalStandard:DINGrade:4, 5, 6, 8Size Range:M3-M52Trademark:SDLSpecification:SGSOrigin:Jiangsu, China Description Pre:Hexagon Head Self Tapping Screw Din7976 Next:Supanchor Anchor Bolt Grout