Standard: ASME B 18.6
Available sizes: 0# to 3# (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0# | 0.0730 | 0.018 | 0.043 | 0.031 | 0.025 | 5/32 | 0.137 | 0.042 | 0.070 | 0.120 | 0.056 |
| 1# | 0.0990 | 0.030 | 0.077 | 0.042 | 0.033 | 7/32 | 0.187 |
| 0.059 |
| 0.118 |
| 0.167 |
| 0.075 |
| 2# | 0.1250 | 0.041 | 0.080 | 0.053 | 0.041 | 1/4 | 0.237 | 0.076 | 0.152 | 0.215 | 0.094 |
| 3# | 0.1510 | 0.041 | 0.105 | 0.064 | 0.049 | 3/8 | 0.287 | 0.093 | 0.176 | 0.262 | 0.113 |
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.