| Parameter Category | Description |
| Material | Iron, stainless steel, brass, etc. |
| Surface Treatment | Electroplating (zinc, nickel), hot-dip galvanizing, passivation, etc. |
| Standard Specifications | Complies with ISO 4032, GB/T 6170, ANSI B18.2.2, etc. |
| Thread Specifications | M2-M64 , 1/4"-4" |
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