Standard: ASME B 18.6
Available sizes: 2# to 8# (6 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 2# | 0.0990 | 0.030 | 0.067 | 0.116 | 0.187 | 0.169 | 0.027 | 0.041 | 0.078 | 0.061 |
| 3# | 0.1250 | 0.050 | 0.083 | 0.147 | 0.236 | 0.217 | 0.032 | 0.062 | 0.095 |
| 0.080 |
| 4# | 0.1640 | 0.080 | 0.107 | 0.194 | 0.309 | 0.287 | 0.039 | 0.093 | 0.120 | 0.110 |
| 5# | 0.2160 | 0.120 | 0.139 | 0.256 | 0.408 | 0.382 | 0.048 | 0.135 | 0.153 | 0.146 |
| 6# | 0.3125 | 0.194 | 0.198 | 0.372 | 0.590 | 0.557 | 0.065 | 0.212 | 0.216 | 0.214 |
| 8# | 0.3750 | 0.241 | 0.237 | 0.448 | 0.708 | 0.670 | 0.076 | 0.262 | 0.256 | 0.262 |
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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