Standard: IFI 156
Available sizes: 10# to 8# (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10# | 0.3750 | 0.15 | 0.62 | 0.74 | 0.72 | 16 | 1.45 | 0.21 | 0.63 | 1.42 | 0.24 |
| 6# | 0.1640 | 0.12 | 0.39 | 0.45 | 0.43 | 32 | 0.85 | 0.12 | 0.41 | 0.83 | 0.15 |
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.
| 8# | 0.2500 | 0.12 | 0.44 | 0.56 | 0.53 | 20 | 1.08 | 0.14 | 0.46 | 1.05 | 0.17 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.