Standard: ASME B 18.6
Available sizes: 0# to 3# (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0# | 0.1120 | 99° | 101° | 0.049 | 0.039 | 40 | 0.212 | 0.024 | 0.017 | 0.188 | 0.031 |
| 00# | 0.0860 | 99° | 101° | 0.037 | 0.031 | 56 | 0.162 |
| 0.019 |
| 0.012 |
| 0.142 |
| 0.023 |
| 000# | 0.0600 | 99° | 101° | 0.026 | 0.023 | — | 0.112 | 0.013 | 0.008 | 0.095 | 0.016 |
| 0000# | 0.0340 | 99° | 101° | 0.014 | 0.012 | — | 0.06 | 0.011 | 0.007 | 0.055 | 0.008 |
| 1# | 0.1640 | 99° | 101° | 0.072 | 0.054 | 32 | 0.312 | 0.036 | 0.027 | 0.282 | 0.045 |
| 2# | 0.2500 | 99° | 101° | 0.11 | 0.075 | 20 | 0.477 | 0.055 | 0.042 | 0.437 | 0.064 |
| 3# | 0.3750 | 99° | 101° | 0.165 | 0.094 | 16 | 0.717 | 0.083 | 0.065 | 0.662 | 0.081 |
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.