Technical features and purpose
The international standard regulates the geometric and operational parameters of hexagon nuts (style 1) in the metric thread range from M5 to M64. This type of fastener belongs to product grade C, which determines the specifics of tolerances and manufacturing precision. Products supplied by EV Group China fully comply with international standardization requirements to ensure the reliability of threaded connections in industrial equipment.
If you need to select fasteners with characteristics outside the scope of this regulation, EV Group China specialists recommend referring to related ISO series standards, including ISO 724, 898-2, 965-1, and 4759-1 for clarification of mechanical properties and tolerances.
Technical delivery conditions and quality standards
| Material | Carbon steel |
| General requirements | ISO 8992 |
| Thread. Tolerance class | 7H (according to ISO 724, ISO 965-1) |
| Property class | D≤M39: ISO 898-2; D>M39: upon individual agreement |
| Product grade (dimensions, shape, tolerances) | C (according to ISO 4759-1) |
| Surface quality / coating | Electroplating (ISO 4042); zinc flake coating (ISO 10683); hot-dip galvanizing (ISO 10684); other types of treatment according to customer technical specifications |
| Quality control | According to ISO 3269 protocols |