Washer, Used for Switch, Relay, or Thermostats and so on, RoHS Compliant Materials: steel, alloy steel and stainless steelSurface: black, phosphate, zinc, hot dip galvanized and dacrometSize: M3 to M100Standards: DIN125, DIN126, DIN9021, F436, IFI USS and SAENon-standard are also available Flat Washer with Black, Phosphate, Zinc and Hot Dip Galvanized Surface, Measures M3 To M100