DIN 93 tab washer with long tab, 21 mm, Article number 93A4210. Made in stainless steel a4. 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.