ISO 15977-L blind rivet (form L), 6.4 x 22 mm, Article number 159776422AS. Surface finish: plain. Blind Rivet manufactured to ISO 15977. 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.