ISO 2338 dowel pin, 4 x 50 mm, h8 tolerance, Article number 2338H040501. Property class / material: steel, surface finish zinc plated. Dowel Pin manufactured to ISO 2338. 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: positioning, alignment and locking of machine elements, shafts and fittings in machine building, plant maintenance and marine equipment.