Standard: ASME B 18.2
Available sizes: 1/4 to 8# (6 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 0.5000 | 1.760 | 0.663 | 0.688 | 13 | 20 | 0.794 | 1.690 | 0.756 |
| 10# | 0.3750 | 1.760 | 0.551 | 0.562 | 16 | 24 | 0.650 | 1.690 | 0.628 |
| 3/8 | 0.8750 | 2.510 |
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.
| 1.212 |
| 1.250 |
| 9 |
| 14 |
| 1.443 |
| 2.440 |
| 1.382 |
| 5/16 | 0.6250 | 2.135 | 0.782 | 0.813 | 11 | 18 | 0.939 | 2.067 | 0.891 |
| 6# | 0.1640 | 0.645 | 0.302 | 0.312 | 32 | 36 | 0.361 | 0.595 | 0.344 |
| 8# | 0.2500 | 1.760 | 0.428 | 0.438 | 20 | 28 | 0.505 | 1.690 | 0.488 |
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