Standard: GB /T 10433 - 1989
Available sizes: 10 to 8 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| 10 | 18.58 | 12.7 | 12 | 19.42 | 32.5 | 31.5 |
| 13 | 21.58 | 12.7 | 12 | 22.42 | 35.5 | 34.5 |
| 6 | 7.71 | 7.58 | 7 | 8.29 | 15.35 | 14.65 |
| 8 | 12.65 | 10.58 | 10 | 13.35 |
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.
| 22.42 |
| 21.58 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.