Toolcraft stainless steel lock washers form a din 9021 a2 packs of 100 toolcraft 194717 this pack of m4 stainless steel lock washers from toolcraft are a type washers manufactured with v2a stainless steel and designed with a smooth edge on the outside toolcraft 194717 stainless steel washers form a din 9021 a2 m4 pack of 100