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| Brand Name : | YongBiao |
| Model Number : | ST6.3*125mm |
| Certification : | ISO9001,TUV |
| Price : | 1-10000pcs:0.47usd/pcs,100000-200000pcs:0.45usd/pcs |
| Payment Terms : | T/T |
| Supply Ability : | 5000000 Tons/Year |
| Delivery Time : | 7-25days |
Dacromet Hex Washer Head Self Drilling Screw With EPDM Washer
1.Products Details:
These Dacromet-coated self-drilling screws are high-performance fasteners engineered for exceptional corrosion resistance, validated by 1000-hour salt spray test compliance (per ASTM B117 standards).
2.Key Features:
• Dacromet Coating: A pollution-free, inorganic ceramic coating (composed of zinc/aluminum flakes in a chromium-based matrix) that forms a dense, self-repairing protective barrier. Unlike traditional plating, it avoids hydrogen embrittlement (critical for high-strength applications) and resists solvents, gasoline, and extreme temperatures (up to 300°C/572°F).
• 1000-Hour Salt Spray Resistance: The coating delivers 7–10x better corrosion protection than standard zinc plating, enduring 1000+ hours of neutral salt spray exposure without red rust—ideal for marine, coastal, or outdoor environments.
• Self-Drilling Design: Integrates a sharp, drill-point tip to eliminate pre-drilling, enabling fast installation in metal, wood, or composite materials (paired with a bonded washer for enhanced sealing in roofing/construction uses).

3.Technical Parameters of Hex Self Drilling Screw
| Standard | DIN,GB,ISO |
| Diameter | ST4.2,ST4.8,ST5.5,ST6.3 |
| Length | 25mm,32mm,38mm,50mm,55mm,63mm,75mm,100mm |
| Material | 304+435,316+435 |
| Packaging Details | Carton box |
| Inspection | ISO9001 |
| Service | OEM ODM Customized |

4.Certificate Display

5.Production Process

6.Packaging and shipping Details




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| Company Info. |
| NINGBO YONGBIAO FASTENER CO.,LTD |
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