Standard: BS 4620
Available sizes: Φ1 to Φ2 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| Φ1 | 1.27 | 0.7 | 0.5 | 1.13 | 2.6 | 0.7 | 2.2 | 3.6 |
| Φ1.2 | 2.07 | 1.04 | 0.8 | 1.93 | 4.24 | 1.2 | 3.76 | 6 |
| Φ1.6 | 3.07 | 1.44 | 1.2 | 2.93 | 6.24 |
Standard corrosion protection for indoor and mild outdoor environments.
Salt spray: 96–200 hours | RoHS compliant (trivalent chromium)
High-performance coating for automotive, marine, and harsh environments.
Salt spray: 720–1500 hours | Recommended for grade 8.8+
Heavy-duty protection for structural and outdoor applications.
Salt spray: 500–1000 hours | Thread tolerance adjustment required
Note for high-strength fasteners (Grade 10.9, 12.9): Electroplating processes require hydrogen embrittlement relief baking (minimum 4 hours at 200°C within 4 hours of plating). Contact our engineering team for grade-specific plating recommendations.
Request detailed technical specifications, material certifications, and availability information for your application requirements. Our engineering team can provide product recommendations, custom specifications, and technical documentation.
| 1.8 |
| 5.76 |
| 9 |
| Φ2 | 4.09 | 1.89 | 1.6 | 3.91 | 8.29 | 2.4 | 7.71 | 12 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.