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Hexagon head serrated screw with flange
Zinc-nickel-plated frame screw for commercial vehicles, transparent passivated (ZNSH) with sealing. Strength class 10.9. From M12 with fine thread
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Serrated flange bolt with fine thread (from M12)
Working principle of locking ribs:
During tightening, the counter-material is rolled in the area of the bolt contact surface by the locking ribs. This causes a plastic deformation that hardens the surface. No significant settling is determined at the end of tightening. The locking ribs limit the amount of settling of the connection and therefore reduce the loss of pretensioning force.
Chromium(VI)-free
Complies with the EU End of Life Vehicles Directive
Corrosion resistance
Approx. 720 h base metal corrosion in accordance with DIN EN ISO 9227-NSS
The specified corrosion resistances apply for the corrosion tests according to DIN EN ISO 9227-NSS (salt spray tests), at the earliest 24 h after coating in the "as coated" state, i.e. before sorting, packaging, transporting and/or assembly. Inevitable handling and assembly processes may reduce these values. Applying the corrosion resistance values resulting from the salt spray test to real assembly and operating conditions is not possible in the majority of cases. When designing a connection both the combined materials and if necessary coatings as well as the environmental conditions during operation must be considered by the designer in the selection of a suitable corrosion protection coating.
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