Standard: DIN 22424 - 1990
Available sizes: M10 to M8 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 3 | 30 | 29.8 | 5.1 | 41.7 | 25 | 26.5 | 19 | 19.2 | 4.7 | 42.3 |
| M4 | 0.8 | 8 | 7.8 | 2.1 | 9.8 | 6 | 6.5 |
| 3.7 |
| 3.9 |
| 1.9 |
| 10.2 |
| M5 | 1.25 | 11.75 | 11.55 | 2.4 | 14.8 | 10 | 10.8 | 6 | 6.2 | 2.2 | 15.2 |
| M6 | 1.75 | 16 | 15.8 | 3.1 | 21.8 | 14 | 14.1 | 9 | 9.2 | 2.9 | 22.2 |
| M8 | 2.5 | 25 | 24.8 | 4.1 | 34.7 | 21 | 22.5 | 16 | 16.2 | 3.9 | 35.3 |
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.