DIN 976-1 (form A) with metric ISO standard thread ("ISO-compliant"). Hot-dip galvanised steel, 8.8U.
The threaded rods are manufactured with a thread undersize in tolerance class 6AZ before the surface protection is applied. These threaded rods are ISO-compliant after hot-dip galvanisation. This means they fit hot-dip galvanised nuts with thread tolerance 6H.
