Standard: AN 310 - 1998
Available sizes: 1/2 to 9/16 (7 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 12 | 1.156 | 1.667 | 1.953 | 1.690 | 1.667 | 0.156 | 0.813 | 1.690 | 0.187 |
| 1/4 | 24 | 0.406 | 0.553 | 0.656 | 0.565 | 0.553 | 0.125 | 0.219 | 0.565 | 0.156 |
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.
| 10# | 28 | 0.281 | 0.428 | 0.500 | 0.440 | 0.428 | 0.078 | 0.125 | 0.440 | 0.109 |
| 3/8 | 18 | 0.719 | 0.986 | 1.156 | 1.002 | 0.986 | 0.156 | 0.469 | 1.002 | 0.187 |
| 5/16 | 20 | 0.563 | 0.738 | 0.875 | 0.752 | 0.738 | 0.125 | 0.359 | 0.752 | 0.156 |
| 7/16 | 14 | 0.906 | 1.296 | 1.516 | 1.315 | 1.296 | 0.156 | 0.656 | 1.315 | 0.187 |
| 9/16 | 12 | 1.250 | 1.852 | 2.172 | 1.877 | 1.852 | 0.156 | 0.875 | 1.877 | 0.187 |
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