Wenzhou Jinjiu Fastener Co.,Ltd.
温州市金久紧固件有限公司
| material | Carbon steel |
| grade, rigidity | grade 10.9 |
| Coating | black oxide coating |
| 材料：碳钢、合金钢，等级：4.8、8.8、10.9、12.9，表面处理：发黑，公称直径：M10-M56；公称长度：50-500MM Carbon steel, alloy steel, Grade: 4.8, 8.8, 10.9, 12.9, surface treatment: black, nominal diameter: M10-M56; Nomina |
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