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 | 138°30' | 2.78 | 0.49 | 0.53 | 1.03 | 0.98 | 1.3 | 1.25 | 0.54 | 0.48 |
| 1 | 8 | 146°30' | 6.74 | 2.07 | 0.81 | 2.52 | 2.47 |
| 3.84 |
| 3.79 |
| 2.12 |
| 0.73 |
| 2 | 10 | 153°30' | 8.34 | 2.71 | 1.12 | 3.6 | 3.55 | 5.11 | 5.06 | 2.76 | 1.04 |
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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