Standard: ASME B 18.2
Available sizes: 1/2 to 5/8 (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 0.7500 | 0.574 | 0.614 | 1-1/8 | 1.125 | 10 | 0.768 | 1.591 | 1.494 | 0.729 | 1.088 |
| 3/8 | 0.5000 | 0.371 | 0.411 | 3/4 | 0.75 | 13 | 0.515 |
| 1.061 |
| 0.995 |
| 0.482 |
| 0.725 |
| 5/8 | 1.0000 | 0.761 | 0.801 | 1-1/2 | 1.5 | 8 | 1.022 | 2.121 | 1.991 | 0.976 | 1.45 |
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.