COUPLING NUT, CLASS 4, BRIGHT ZINC PLATED
Area of usage
Coupling nuts are designed to join two threaded parts with each other, for example to join threaded rods.
Coupling nuts are manufactured of steel in accordance with strength class 4.
A bolt in a particular strength class fitted with a nut in the corresponding strength class (Technical data, table 7) is designed to form a joint in which one can obtain a preload in the bolt corresponding to the test force without the risk of the thread shearing. Nuts in designs according to strength class 4 are suitable for joining threaded rods in 4.6 grade.