| Application | To fix and cooperate with turbine blade root bolt |
| Standard | clients’ requirements |
| Material | 42CrMoA、40CrNiMo |
| Property class | 8.8、10.9、12.9 |
| Specification | M27-M64 |
| Length | 100-900mm |
| Coating | oil、black、dacromet 、zinc spray |
| Advantage | High product performance, Impact energy up to 60J, high precision in dimension |