Standard: SAE J 1926
Available sizes: 1/2 to 9/16 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 41 | 2.4 | 23 | 29.25 | 29.15 | 16 | 32 | 3.7 | 3.3 | 29.2 | 3.5 |
| 3/4 | 65 | 3.2 | 23 | 49.95 | 49.85 | 33 | 54 |
| 3.7 |
| 3.3 |
| 49.9 |
| 3.5 |
| 3/8 | 23 | 1.6 | 14 | 14.1 | 14 | 6 | 16 | 2.8 | 2.4 | 14.05 | 2.6 |
| 5/16 | 19 | 1.6 | 12 | 10.8 | 10.7 | 3.5 | 13 | 2.3 | 1.9 | 10.75 | 2.1 |
| 7/16 | 30 | 2.4 | 17.5 | 20.7 | 20.6 | 10 | 22 | 2.9 | 2.5 | 20.65 | 2.7 |
| 7/8 | 101 | 3.2 | 30.5 | 78.5 | 78.4 | 57.7 | 83 | 3.7 | 3.3 | 78.45 | 3.5 |
| 9/16 | 49 | 3.2 | 23 | 35.6 | 35.5 | 21 | 38 | 3.7 | 3.3 | 35.55 | 3.5 |
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.
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.