| Material: | Aluminum , Carbon Steel , Stainless Steel , etc. |
|---|---|
| Type: | Question Mark Head |
| Connection: | Common Bolt |
| Head Style: | Round |
| Standard: | DIN, ANSI, GB, JIS, BSW, GOST, ASTM, Ifi, as, ISO, etc. |
| Grade: | 4.8,6.8,8.8,10.9,12.9, SS304, SS316, 5050,5154 |
| Customization: |
|---|
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