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Washer for high-strength screw connections (12.9/12)

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Washer for high-strength screw connections (12.9/12)

WN 7090, steel 380 HV, zinc flake, silver

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The washers are designed for use with high-strength screw connections using screws from strength class 12.9

  • The hardness range of 380-450 HV corresponds to the versions of DIN EN ISO 898-3 for combination with screws from strength class 12.9

  • High level of corrosion protection due to the zinc-flake coating