Standard: ISO 8434
Available sizes: 10 to 8 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 15 | 24 | 9 | 35 | 31 | 13 | 35.5 | 30.7 | 23.5 | 36 | 31.3 |
| 12 | 24 | 36 | 10 | 41 | 38 | 22 | 41.5 | 37.7 |
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.
| 30.5 |
| 42 |
| 38.3 |
| 15 | 36 | 50 | 12 | 55.5 | 51 | 34 | 56 | 50.7 | 40 | 56.5 | 51.3 |
| 6 | 6 | 12 | 7 | 27 | 21 | 4 | 27.5 | 20.7 | 14 | 28 | 21.3 |
| 8 | 10 | 17 | 8 | 29 | 24 | 8 | 29.5 | 23.7 | 17 | 30 | 24.3 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.