DIN 661 countersunk head rivet, 4 x 8 mm, Article number 661A204008. Made in stainless steel a2. Countersunk Head Rivet manufactured to DIN 661. 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: permanent joining of sheet metal, brackets and light structures in fabrication, plant maintenance and marine outfitting.