Standard: ANSI B 18.11 - 1961
Available sizes: 0.0118 to 0.0236 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.0118 | 35 | 0.002 | 0.005 | 0.014 | 0.012 | 282 | 0.023 | 0.003 | 0.007 | 0.021 | 0.004 |
| 0.0138 | 45 | 0.002 | 0.007 | 0.018 | 0.015 | 254 | 0.029 |
| 0.003 |
| 0.009 |
| 0.027 |
| 0.005 |
| 0.0157 | 55 | 0.003 | 0.008 | 0.022 | 0.019 | 203 | 0.037 | 0.004 | 0.011 | 0.035 | 0.006 |
| 0.0177 | 70 | 0.004 | 0.011 | 0.028 | 0.024 | 145 | 0.045 | 0.005 | 0.014 | 0.043 | 0.008 |
| 0.0197 | 90 | 0.005 | 0.014 | 0.036 | 0.032 | 113 | 0.056 | 0.007 | 0.018 | 0.054 | 0.010 |
| 0.0217 | 110 | 0.006 | 0.018 | 0.045 | 0.040 | 102 | 0.072 | 0.008 | 0.022 | 0.068 | 0.012 |
| 0.0236 | 140 | 0.008 | 0.023 | 0.055 | 0.050 | 85 | 0.092 | 0.012 | 0.028 | 0.088 | 0.016 |
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.