Standard: ASME B 18.6
Available sizes: 2# to 8# (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2# | 0.0990 | 0.058 | 0.070 | 0.056 | 0.033 | 28 | 0.107 | 0.232 | 0.215 | 1 | 0.156 |
| 3# | 0.1250 | 0.075 | 0.088 | 0.054 | 0.026 | 20 | 0.139 |
| 0.291 |
| 0.272 |
| 2 |
| 0.198 |
| 4# | 0.1510 | 0.092 | 0.105 | 0.065 | 0.037 | 19 | 0.150 | 0.350 | 0.330 | 2 | 0.238 |
| 5# | 0.1900 | 0.118 | 0.130 | 0.093 | 0.066 | 16 | 0.177 | 0.439 | 0.416 | 2 | 0.300 |
| 6# | 0.2500 | 0.157 | 0.170 | 0.107 | 0.080 | 14 | 0.244 | 0.576 | 0.548 | 3 | 0.396 |
| 7# | 0.3750 | 0.238 | 0.253 | 0.170 | 0.144 | 12 | 0.348 | 0.861 | 0.825 | 4 | 0.593 |
| 8# | 0.5000 | 0.319 | 0.335 | 0.210 | 0.184 | 10 | 0.383 | 1.146 | 1.101 | 4 | 0.790 |
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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