Standard: YJT 7011
Available sizes: 10 to 19 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 0.6 | 8.8 | 8.1 | 12.97 | 1.8 | 0.55 | 13.1 | 1.7 | 1 | 13.52 | 1.9 |
| 12 | 1 | 12.4 | 11.5 | 17.17 | 2.1 | 0.94 | 17.3 | 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.
| 1.3 |
| 17.72 |
| 2.2 |
| 15 | 1 | 14.4 | 13.3 | 19.37 | 2.2 | 0.94 | 19.5 | 2.1 | 1.3 | 19.92 | 2.3 |
| 16 | 1 | 16.2 | 15.1 | 21.37 | 2.3 | 0.94 | 21.5 | 2.2 | 1.3 | 21.92 | 2.4 |
| 17 | 1 | 18 | 16.9 | 23.37 | 2.4 | 0.94 | 23.5 | 2.3 | 1.3 | 23.92 | 2.5 |
| 18 | 1.2 | 20.2 | 18.9 | 26.69 | 2.8 | 1.14 | 26.9 | 2.7 | 1.5 | 27.32 | 2.9 |
| 19 | 1.2 | 22.2 | 20.7 | 28.89 | 3 | 1.14 | 29.1 | 2.9 | 1.5 | 29.52 | 3.1 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.