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A Metric Coupling Nut is a hexagonal nut with an extended body usually used to couple two studs together.-Heat treated to tensile strength class 10.-For joining two studs DIN 6379. -Minimum thread reach should be 1 x diameter.-For functional and safety purpose bolts and studs to be coupled should be screwed in an either side to half the length of the nut.>>Click here for inch size Coupling Nuts
