Hex Coupling Nuts (DIN 6334) Haiyan County Fuxin High Strength Fastener Factory Base Info Model NO.:DIN 6334Material:Carbon SteelType:Hexagon HeadConnection:AllHead Style:HexagonalStandard:DINGrade:Class 6 Description Pre:Nonstandard Bolts Next:Hex Flang Nuts (DIN 6923)