Standard: Q 801
Available sizes: 10 to 8 (6 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 16 | 36 | 22.160 | 13.5 | M30x2 | 22 | 7 | 20.0 | 22.290 | 9.5 |
| 12 | 10 | 50 | 35.300 | 16.0 | M45x2 | 35 | 8 | 24.0 | 35.100 | 12 |
| 4 | 10 | 12 |
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.
| 5.140 |
| 7.8 |
| M10*1 |
| 5 |
| 3.5 |
| 11.5 |
| 5.215 |
| 5.5 |
| 5 | 25 | 17 | 8.150 | 10.0 | M14x1.5 | 8 | 4 | 14.5 | 8.240 | 7 |
| 6 | 25 | 22 | 12.150 | 11.0 | M18x1.5 | 12 | 5 | 15.5 | 12.260 | 8 |
| 8 | 25 | 30 | 16.150 | 11.5 | M24x1.5 | 16 | 5 | 17.5 | 16.260 | 8.5 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.