Standard: ASME B 16.11 - 2021
Available sizes: 1 to 3/8 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| 1 | 1.25 | 2.5 | 63.5 | 32 | 1 | 25 |
| 1/2 | 0.81 | 1.12 | 28.58 | 21 | 0.62 | 16 |
| 1/4 | 0.56 | 0.56 | 14.29 | 14 | 0.38 | 10 |
| 1/8 | 0.44 | 0.38 | 9.55 | 11 | 0.25 | 6 |
| 3/4 |
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.
| 1.06 |
| 1.5 |
| 38.1 |
| 27 |
| 0.75 |
| 19 |
| 3/8 | 0.75 | 0.81 | 20.64 | 19 | 0.50 | 13 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.