| STD | Material | Class | 140HV,200HV |
| DIN7349,DIN125,GB97，GB96，ISO7089，ASME B 18.22.1 | 10A，Q135，ST12，A2-70等 | ||
| Plating | BLACK/ZINC/DACROMET/RAW | ||
| SPECS | |||
| M4~64 | 1/4~2 | ||
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