Standard: ASME B 18.16
Available sizes: 1/4 to 8# (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 0.5625 | 0.483 | 0.506 | 0.861 | 1.01 | 12 | 18 | 1.188 | 1.155 | 0.875 | 0.982 |
| 10# | 0.3125 | 0.268 | 0.283 | 0.489 | 0.577 | 18 | 24 |
| 0.680 |
| 0.660 |
| 0.500 |
| 0.557 |
| 12# | 0.4375 | 0.375 | 0.395 | 0.675 | 0.794 | 14 | 20 | 0.937 | 0.910 | 0.688 | 0.768 |
| 5/16 | 0.7500 | 0.627 | 0.675 | 1.088 | 1.299 | 10 | 16 | 1.500 | 1.460 | 1.125 | 1.24 |
| 6# | 0.1640 | 0.187 | 0.203 | 0.334 | 0.397 | 32 | 36 | 0.469 | 0.452 | 0.344 | 0.381 |
| 8# | 0.2160 | 0.222 | 0.236 | 0.428 | 0.505 | 24 | 28 | 0.594 | 0.574 | 0.438 | 0.488 |
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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