Detailed Product Description

1.Specifications: 30g-25000g screws, can be matched with corresponded screw heads, distributors, barrels according to customer's requirement
2.Depth of Nitrated Layer: 0.5-0.8mm
3. Hardness of nitration: 900-1020Hv
4.Fragility of nitration: Less than grade 1
5.Surface roughness: Ra 0.4um
6.Surface Hardness of Nitrated Cr coating Layer: ≥950Hv
7.Hardness of Bimetallic Layer: HRC55-72
8.Thickness of Cr-coating Layer: 0.03-0.08mm
9.Depth of Bimetallic Layer: >2mm