Standard: GB /T 3390.1 - 2013
Available sizes: 10 to 8 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| 10 | 12 | 9 | 40 | 5.74 | 18 | 212 | 24 | 75 |
| 11 | 14 | 10.5 | 40 | 6.74 | 20.5 | 288.3 | 24 | 75 |
| 12 | 16 | 12.3 | 40 | 7.19 |
| 23 |
| 377 |
| 25.5 |
| 75 |
| 13 | 17 | 13 | 40 | 7.73 | 24.2 | 425 | 25.5 | 75 |
| 8 | 10 | 7.2 | 40 | 4.74 | 15.5 | 147 | 24 | 75 |
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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