Standard: QC /T 864 - 2011
Available sizes: M5 to M8 (3 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M5 | 11.5 | 5.85 | 0.3 | 11.05 | 10.5 | 14.5 | 9.78 | 6.15 | 1.1 | 10 |
| M6 | 15.5 | 8.8 | 0.3 | 16.64 | 14.5 | 20 | 14.73 | 9.2 | 1.5 | 15 |
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.
| M8 | 16.5 | 10.8 | 0.3 | 20.03 | 15.5 | 25 | 17.73 | 11.2 | 1.8 | 18 |
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