ISO 1234 split pin, 4 x 28 mm, Article number S902177-219. Property class / material: steel, surface finish plain. Split Pin manufactured to ISO 1234. 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.