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 | 1/4 | 0.531 | 13.49 | 0.281 | 7.92 | 5/8 -18 | 5/8 | 7.92 | 0.312 | 7.14 | 0.312 |
| 3/16 | 1/8 | 0.344 | 8.74 | 0.188 | 5.56 | 7/16 -20 | 7/16 |
| 5.56 |
| 0.219 |
| 4.78 |
| 0.219 |
| 3/8 | 1/2 | 0.938 | 23.83 | 0.625 | 14.27 | 1-1/16 -14 | 1-1/16 | 18.26 | 0.719 | 15.88 | 0.562 |
| 5/16 | 1/2 | 0.75 | 19.05 | 0.5 | 14.27 | 7/8 -14 | 7/8 | 13.49 | 0.531 | 12.7 | 0.562 |
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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