Standard: ASME B 18.2
Available sizes: 1/2 to 7/16 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 3-1/4 | 0.812 | 0.876 | 1-7/8 | 1.875 | 1.2500 | 1.277 | 2.652 | 2.489 | 1.223 | 1.812 |
| 1/4 | 7 | 0.232 | 0.268 | 9/16 | 0.562 | 0.3750 | 0.388 |
| 0.795 |
| 0.747 |
| 0.360 |
| 0.544 |
| 10# | 10 | 0.156 | 0.188 | 3/8 | 0.375 | 0.2500 | 0.260 | 0.53 | 0.498 | 0.237 | 0.362 |
| 3/8 | 4-1/2 | 0.476 | 0.524 | 1-1/8 | 1.125 | 0.7500 | 0.768 | 1.591 | 1.494 | 0.729 | 1.088 |
| 5/16 | 6 | 0.308 | 0.348 | 3/4 | 0.750 | 0.5000 | 0.515 | 1.061 | 0.995 | 0.482 | 0.725 |
| 7/16 | 3-1/2 | 0.628 | 0.684 | 1-1/2 | 1.500 | 1.0000 | 1.022 | 2.121 | 1.991 | 0.976 | 1.450 |
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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