Washer - a thin plate (typically disc-shaped) with a hole that is used to distribute the load of a threaded fastener.

Washers are often used with nuts or screws to improve the structural integrity of an assembly.

BERVEL® manufactures plain washers for high-strength bolts of 16-30 mm  thread diameter.

Protective coatings: zinc-flake and hot-dip galvanized coatings.