Standard: SAE J 531
Available sizes: 1/16 to 3/8 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| 1/16 | 27 | 0.283 | 6.10 | 7.87 | 0.310 | 7.19 | 0.240 |
| 1/4 | 14 | 0.627 | 11.18 | 16.26 | 0.640 | 15.93 | 0.440 |
| 1/8 | 18 | 0.440 | 7.87 | 12.06 | 0.475 | 11.18 | 0.310 |
| 3/8 | 11-1/2 | 0.815 | 12.70 | 20.07 | 0.790 | 20.70 | 0.500 |
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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