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 | 31 | 32.6 | 11.2 | U | 13/16 | 9.52 | 0.34 | 31.8 | 0.375 | 8.6 |
| 3/16 | 7/16 -20 | 24.6 | 26.2 | 8.6 | 0.34 | 5/8 | 6.35 |
| 0.26 |
| 25.4 |
| 0.25 |
| 6.6 |
| 3/8 | 1-1/16 -14 | 50 | 51.6 | 19.8 | 0.78 | 1-5/16 | 19.05 | 0.66 | 50.8 | 0.75 | 16.8 |
| 5/16 | 7/8 -14 | 42.1 | 43.7 | 16.8 | 0.66 | 1-1/16 | 15.88 | 0.54 | 42.9 | 0.625 | 13.7 |
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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