Standard: Q 314
Available sizes: (M14) to M8 (6 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| (M14) | 3 | 3 | 29.1 | 13.6 | 27.55 | 28.15 | 30° | 60° | 28.15 | 18.8 |
| M10 | 2.5 | 3 | 22 | 10.4 | 21 | 21.4 | 30° | 70° | 21.4 | 14.2 |
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.
| M12 | 2.5 | 3 | 26.9 | 12.4 | 25.01 | 25.61 | 30° | 60° | 25.61 | 17.2 |
| M5 | 1 | 0.7 | 7.95 | 3.5 | 7.28 | 7.58 | 40° | 90° | 7.58 | 4.8 |
| M6 | 1.5 | 1.2 | 12.8 | 5.8 | 11.82 | 12.1 | 40° | 80° | 12.1 | 7.9 |
| M8 | 2 | 2 | 17.87 | 8.1 | 16.47 | 16.87 | 30° | 70° | 16.87 | 11 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.