Assemblies for metallic structures compliant with EN ISO 14399-4/6, in K1 and K2 versions, offer a reliable solution for structural joints requiring controlled preload and secure tightening.
Made of high-strength class 10.9 bolts, nuts, and two 300HV washers, this assembly is engineered to deliver optimal performance in critical environments such as bridges, steel buildings, and other complex infrastructure.
Available surface treatments for EN 14399 fasteners:
- Black/raw steel
- Hot-dip galvanized
Carpentry components are manufactured from high-quality materials and subjected to rigorous testing to ensure compliance with international standards.
As a manufacturer, we issue the 3.1 Certificate and Declaration of Performance ourselves, thanks to our in-house laboratory, guaranteeing the highest quality and reliability.
Our EN 14399 bolting boxes are customised with the Marvit logo, ensuring product recognisability and authenticity. Each box ensures traceability and regulatory compliance, offering a reliable solution for steelwork.
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