DIN 93 tab washer with long tab, 31 mm, Article number 93311. Property class / material: steel, surface finish zinc plated. Tab Washer with Long Tab manufactured to DIN 93. 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.