Standard: GJB 3371
Available sizes: M10 to M8 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 1.5 | 5 | 1.5 | 4.7 | 24 | 18 | 17.973 | 26.8 | 16 | 5 | 23.67 |
| M12 | 1.5 | 6.5 | 2 | 5.7 | 30 | 22 | 21.967 |
| 33.6 |
| 20 |
| 6 |
| 29.67 |
| M14 | 1.5 | 7 | 2 | 5.7 | 32 | 24 | 23.967 | 35.8 | 22 | 6 | 31.61 |
| M5 | 1 | 3 | 0.5 | 2.25 | 10 | 6 | 5.982 | 10.9 | 7 | 2.5 | 9.78 |
| M6 | 1.5 | 4 | 0.8 | 3.7 | 14 | 10 | 9.978 | 15.5 | 10 | 4 | 13.73 |
| M8 | 1.5 | 4.5 | 1.0 | 3.7 | 19 | 14 | 13.973 | 21.1 | 13 | 4 | 18.67 |
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.