Standard: QC /T 410
Available sizes: 3 to 7 (5 sizes)
| Size | P | k_max | s_max | s_min | k_nominal |
|---|---|---|---|---|---|
| 3 | 4.3 | 0.101 | 8 | 3~80 | 0.036 |
| 4 | 6.5 | 0.176 | 11 | 3~110 | 0.062 |
| 5 | 8.5 | 0.216 | 13 | 3~130 | 0.071 |
| 6 | 12.5 | 0.375 | 18 | 3~180 | 0.133 |
| 7 | 15.5 | 0.358 | 20 | 4~200 | 0.126 |
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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