Standard: ASME B 18.6
Available sizes: 2# to 8# (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2# | 0.0990 | 0.056 | 1 | 0.042 | 0.033 | 7/32 | 0.187 | 0.055 | 0.018 | 0.167 | 0.096 |
| 3# | 0.1250 | 0.082 | 1 | 0.053 | 0.043 | 1/4 | 0.237 |
| 0.081 |
| 0.018 |
| 0.215 |
| 0.122 |
| 4# | 0.1640 | 0.095 | 2 | 0.070 | 0.058 | 7/16 | 0.312 | 0.094 | 0.029 | 0.285 | 0.168 |
| 5# | 0.2160 | 0.104 | 3 | 0.092 | 0.078 | 9/16 | 0.412 | 0.110 | 0.030 | 0.380 | 0.226 |
| 6# | 0.3125 | 0.148 | 4 | 0.134 | 0.116 | 5/8 | 0.597 | 0.157 | 0.053 | 0.556 | 0.310 |
| 8# | 0.3750 | 0.196 | 4 | 0.161 | 0.140 | 5/8 | 0.717 | 0.205 | 0.061 | 0.670 | 0.358 |
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.
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