Standard: Q 183
Available sizes: M10 to M8 (3 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 1.5 | 17.73 | 14 | 13.73 | 34 | 40 | 12.9 | 18 | 28.6 | 19.86 |
| M12 | 1.5 | 20.67 | 16 | 15.73 | 38 | 44 | 15.2 | 21 | 32.8 |
| 23.15 |
| M8 | 1.25 | 12.73 | 10 | 9.78 | 26 | — | 9.7 | 13 | 20.8 | 14.26 |
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.