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FRIEDBERG screws for steel structures
Friedberg screws are of equally high standards
High strength screw assemblies, nuts and washers are used in many types of steel structures, especially for galvanised and flame galvanised surfaces. These high strength kits are mainly used for friction and rigid joints. Thanks to the tightening torque and pre-load ratio, these assemblies provide a high level of safety in use. The functional and mechanical properties of high-strength assemblies are checked by extensive tests that are part of continuous production tracking. The highest test torque according to DIN 946 is applied in one of these tests (tightening torque of 15000 Nm max, preload max. of 1800 kN) and guarantees maximum product safety.