Standard: SAE J 513
Available sizes: 1/4 to 5/16 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 5/8 -18 | 0.378 | 0.38 | 0.312 | 9.627 | 7.14 | 0.281 | 9.602 | 0.379 | 7.92 | 9.652 |
| 3/16 | 7/16 -20 | 0.253 | 0.255 | 0.188 | 6.452 | 4.78 |
| 0.188 |
| 6.427 |
| 0.254 |
| 4.78 |
| 6.477 |
| 3/8 | 1-1/16 -14 | 0.753 | 0.755 | 0.688 | 19.152 | 15.88 | 0.625 | 19.127 | 0.754 | 17.48 | 19.177 |
| 5/16 | 7/8 -14 | 0.628 | 0.63 | 0.547 | 15.977 | 12.7 | 0.5 | 15.952 | 0.629 | 13.89 | 16.002 |
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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