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Flat washer with large external diameter ISO 7093-1 steel 200 HV zinc plated thick-layer passivated with sealing (ZSM)
Flat washer with large external diameter ISO 7093-1 steel 200 HV zinc plated thick-layer passivated with sealing (ZSM) - 1
Flat washer with large external diameter ISO 7093-1 steel 200 HV zinc plated thick-layer passivated with sealing (ZSM) - 2

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Flat washer with large external diameter ISO 7093-1 steel 200 HV zinc plated thick-layer passivated with sealing (ZSM)

Fasteners with zinc plated chromium(VI)-free thick-layer passivation (ZSM) offer a future-proof alternative compared to surfaces containing chromium(VI)

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The coating consists of a zinc layer with passivation based on chromium(III) with sealing. Washers with ZSM coating can be paired with ZSML- as well as thick layer passivated threaded parts.



Overview of advantages:


  • Chromium(VI)-free alternative to A2C or A3C

  • Thermal capacity up to 120 °C

  • Even coating distribution

  • Functional and decorative