Standard: SAE J 531
Available sizes: 1/16 to 3/8 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/16 | 27 | 7.6 | 0.12 | 4.60 | 0.181 | 9.7 | 0.38 | 0.16 | 3 | 7/16 | 4.1 |
| 1/4 | 14 | 15.7 | 0.19 | 7.72 | 0.304 | 19 | 0.75 |
| 0.69 |
| 4.8 |
| 1-1/16 |
| 17.5 |
| 1/8 | 18 | 11.7 | 0.16 | 5.38 | 0.212 | 14.2 | 0.56 | 0.38 | 4.1 | 11/16 | 9.7 |
| 3/8 | 11-1/2 | 19.6 | 0.19 | 7.72 | 0.304 | 23.9 | 0.94 | 0.88 | 4.8 | 1-5/16 | 22.4 |
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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