Standard: QB /T 2564.3
Available sizes: 0 to 2 (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 4.5 | 7°00' | 0.1 | 0.68 | 1.4 | 1.19 | 1.11 | 2.02 | 0.13 | 0.71 | 1.37 |
| 1 | 8 | 5°45' | 0.2 | 1.33 | 3.96 | 2.65 | 2.55 |
| 4 |
| 0.36 |
| 1.38 |
| 3.91 |
| 2 | 10 | 7°00' | 0.36 | 2.05 | 5.18 | 4.02 | 3.92 | 5.4 | 0.51 | 2.1 | 5.13 |
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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