Standard: ASME B 18.16
Available sizes: 1/2 to 7/16 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 1.000 | 1.614 | 1.826 | 8 | 12 | 0.860 | 0.600 | 1.627 | 0.922 |
| 1/4 | 0.313 | 0.553 | 0.622 | 18 | 24 | 0.298 | 0.212 | 0.564 | 0.328 |
| 3/8 | 0.563 | 0.928 | 1.051 | 12 | 18 |
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.
| 0.548 |
| 0.421 |
| 0.940 |
| 0.578 |
| 5/16 | 0.438 | 0.741 | 0.837 | 14 | 20 | 0.423 | 0.316 | 0.752 | 0.453 |
| 7/16 | 0.750 | 1.239 | 1.403 | 10 | 16 | 0.688 | 0.488 | 1.252 | 0.718 |
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