Standard: DIN 660 - 2012
Available sizes: (1.4) to 3 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (1.4) | 2.6 | 2.4 | 0.2 | 2.37 | 1.25 | 2.4 | 4.4 | 1.625 | 1.375 | 4.1 | 1.5 |
| 1 | 1.25 | 1.2 | 0.2 | 1.13 | 0.6 | 1.15 | 2.1 |
| 0.825 |
| 0.575 |
| 1.85 |
| 0.7 |
| 1.2 | 1.65 | 1.6 | 0.2 | 1.52 | 0.8 | 1.55 | 2.8 | 1.125 | 0.875 | 2.55 | 1 |
| 1.6 | 3.6 | 3.4 | 0.3 | 3.37 | 1.75 | 3.4 | 6.2 | 2.225 | 1.975 | 5.62 | 2.1 |
| 2 | 5.15 | 4.6 | 0.4 | 4.82 | 2.5 | 4.85 | 8.8 | 3.125 | 2.875 | 8.22 | 3 |
| 2.5 | 7.15 | 6.6 | 0.4 | 6.82 | 3.5 | 6.85 | 12.2 | 4.35 | 4.05 | 11.5 | 4.2 |
| 3 | 8.15 | 7.5 | 0.4 | 7.76 | 4 | 7.85 | 14 | 4.95 | 4.65 | 13.3 | 4.8 |
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.
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.