1991DIN EN 28839:1991-12 Mechanical properties of fasteners; nonferrous metal bolts, screws, studs and nuts (ISO 8839:1986); german version EN 28839:1991
1991DIN EN 28839:1991 Mechanical properties of fasteners; nonferrous metal bolts, screws, studs and nuts (ISO 8839:1986); german version EN 28839:1991