Standard: GB /T 5625
Available sizes: 10 to 8 (8 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| 10 | 17 | / | 16 | M27×2 | M30×2 | 34 | 58.5 | 26 |
| 12 | 22 | / | 16 | M33×2 | M36×2 | 41 | 62 | 26 |
| 14 | 27 | / | 16 | M42×2 |
| M42×2 |
| 50 |
| 67 |
| 28.5 |
| 16 | 30 | / | 16 | M42×2 | M45×2 | 50 | 67.5 | 28.5 |
| 4 | 3.5 | 36.5 | 8.5 | M10×1 | M10×1 | 14 | 32 | 12.5 |
| 5 | 6 | 51 | 11 | M12×1.5 | M14×1.5 | 17 | 43 | 18 |
| 6 | 10 | 56.5 | 11.5 | M16×1.5 | M18×1.5 | 22 | 45 | 19 |
| 8 | 14 | 64 | 13 | M22×1.5 | M24×1.5 | 30 | 48 | 20 |
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.