DIN 6798-A tooth lock washer, 12.5 x 20.5 x 1 mm, Article number 6798A125. Property class / material: steel 350-425 hv, surface finish plain. Tooth Lock Washer manufactured to DIN 6798-A. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution. Applications: load distribution and locking under bolt heads and nuts in machine building, structural steel, plant maintenance and marine outfitting.