Standard: DIN 6911 - 1986
Available sizes: 10 to 8 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 24 | 16.5 | 6.35 | 224 | 213 | 23.87 | 27.33 | 86 | 6.5 | 26.97 | 90 |
| 12 | 27 | 18 | 8.35 | 250 | 238 | 26.87 | 30.75 | 95 |
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.
| 8.5 |
| 30.36 |
| 100 |
| 3 | 4 | 2.5 | 1.2 | 70 | 66 | 3.952 | 4.53 | 23 | 1.3 | 4.44 | 25 |
| 4 | 6 | 4 | 2.5 | 90 | 86 | 5.952 | 6.81 | 30 | 2.6 | 6.71 | 32 |
| 5 | 10 | 6 | 3.08 | 112 | 106 | 9.942 | 11.37 | 38 | 3.2 | 11.23 | 40 |
| 6 | 14 | 8 | 3.48 | 140 | 133 | 13.89 | 15.93 | 53 | 3.6 | 15.7 | 56 |
| 8 | 19 | 12 | 5.38 | 180 | 171 | 18.87 | 21.63 | 67 | 5.5 | 21.32 | 70 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.