M10 X 30mm Penny Washer BZP
Standard: DIN9021 Large Diameter.
Steel: Grade 4.6 (Mild)
Finish: Zinc & Clear
Repair washers, often called Penny washers, have a large outside diameter, larger than the usual diameter found in traditional flat washers.
This flat washer hosts a flat ring which is used to spread the load of a screwed fastening and prevent damage.