| Standard: | GB/T889, DIN985, DIN982, UNI7473, ISO 7040, ISO 7041, ASME B18.16.6 |
| Grade: |
4, 6, 8
|
| Size: |
M6-M20
|
| Surface Treatment: |
Plain, Black, Zinc Plated, HDG
|
| Material: |
Carbon Steel, Alloy Steel
|
