HEXAGON HEAD BOLTS
| Hexagon bolts | |||
| Executive standard | DIN931 DIN933 DIN960 DIN961 DIN558 DIN601 DIN7990 GB21 GB27GB31 GB5782 GB5783 GB5785Steel structureA325Steel structureA490 A307 A394IS04014 |S04017 AS1252 ASME B18.2.1etc | ||
| Class | 8.8 | d≤30 | 35#、35K、45K、45# |
| d≥33 | 40Cr | ||
| 10.9 | All specification | 40Cr、ML40Cn | |
| 12.9 | All specification | SCM435、35CrMoA、42CrMoA、B7 | |
| Surface finishing | Black,phosphate,zinc,hot dip galvanized,Dacromet,Geomet etc | ||
