Standard: QC /T 411
Available sizes: 10 to 8 (4 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 16 | 5 | 12.034 | 12.023 | 15.89 | 18 | 40 | 20 | 12 | 12 |
| 12 | 25 | 6 | 20.041 | 20.028 | 24.87 | 28 | 60 | 30 | 20 | 20 |
| 16 | 32 | 6 |
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.
| 25.041 |
| 25.028 |
| 31.84 |
| 36 |
| 70 |
| 38 |
| 25 |
| 25 |
| 8 | 10 | 3 | 8.028 | 8.019 | 9.91 | 12 | 25 | 15 | 8 | 8 |
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