Attention: The DIN 555 standard has been officially withdrawn and replaced by the current international regulation DIN EN ISO 4034:2001-03.
Technical overview and application of DIN 555 nuts
DIN 555 defines the geometric parameters and tolerances for hexagonal nuts with a metric thread profile. This fastener is widely used in modern mechanical engineering, industrial construction, and metal structure assembly where reliable fixation of mating parts with corresponding threads is required.
EV Group China specialists note that nuts manufactured according to this specification ensure stable transfer of static loads. Materials used for manufacturing include:
- Carbon steels with various strength classes;
- Corrosion-resistant austenitic steels of grades A2 and A4 for operation in aggressive environments;
- Brass alloys for specific operating conditions.
This standard is fully harmonized with ISO 4034. To select fasteners that meet modern safety and strength requirements, we recommend consulting the experts at EV Group China.