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
Unit of Measure


Thread Size

N/A 12

Width Across Flats (s)

N/A 19

Width from
Corner to Corner (e)

N/A 21.9

O.A. Height (m)

N/A 36


N/A To Be Advised