| Material: | Carbon Steel,Stainless Steel,High Strenght Steel |
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| Type: | Round Head,Hexagon Head |
| Groove: | Word,Triangle,Cross,Special Shape,Hexagon |
| Connection: | Common Bolt,Hinged Bolts |
| Head Style: | Round,Hexagonal,Square |
| Standard: | DIN, GB, ANSI, BSW, JIS |
| Samples: |
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| Customization: |
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