Standard: ASME B 18.2
Available sizes: 1/2 to 7/16 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 7 | 0.658 | 0.78 | 1.098 | 1.688 | 12 | 8 | 1.949 | 1.859 | 1.149 | 1.631 |
| 1/4 | 18 | 0.195 | 0.235 | 0.298 | 0.5 | 24 | — | 0.577 |
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.
| 0.552 |
| 0.324 |
| 0.484 |
| 3/4 | 6 | 0.902 | 1.036 | 1.47 | 2.25 | 12 | 8 | 2.598 | 2.480 | 1.531 | 2.175 |
| 3/8 | 11 | 0.378 | 0.444 | 0.605 | 0.938 | 18 | — | 1.083 | 1.033 | 0.642 | 0.906 |
| 5/16 | 14 | 0.272 | 0.316 | 0.421 | 0.625 | 20 | — | 0.722 | 0.687 | 0.452 | 0.603 |
| 5/8 | 6 | 0.81 | 0.94 | 1.345 | 2.062 | 12 | 8 | 2.382 | 2.273 | 1.404 | 1.994 |
| 7/16 | 9 | 0.531 | 0.604 | 0.852 | 1.312 | 14 | — | 1.516 | 1.447 | 0.895 | 1.269 |
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